diff --git a/package.json b/package.json
index 5898dfab..c8f7a9c3 100644
--- a/package.json
+++ b/package.json
@@ -57,8 +57,8 @@
     "hardhat-gas-reporter": "^1.0.1",
     "mocha": "5.2.0",
     "nyc": "^14.1.1",
-    "solc": "^0.5.10",
-    "truffle": "5.0.31",
+    "solc": "^0.7.5",
+    "truffle": "5.1.43",
     "truffle-config": "^1.1.18"
   }
 }
diff --git a/test/integration/generic/assets/SimpleError.sol b/test/integration/generic/assets/SimpleError.sol
index 56d257e8..f4829a67 100644
--- a/test/integration/generic/assets/SimpleError.sol
+++ b/test/integration/generic/assets/SimpleError.sol
@@ -1,5 +1,5 @@
 // This contract should throw a parse error in instrumentSolidity.js
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 contract SimpleError {
     uint x = 0;
diff --git a/test/integration/generic/contracts/Migrations.sol b/test/integration/generic/contracts/Migrations.sol
index ea6b6138..955d1248 100644
--- a/test/integration/generic/contracts/Migrations.sol
+++ b/test/integration/generic/contracts/Migrations.sol
@@ -1,4 +1,4 @@
-pragma solidity >=0.4.22 <0.6.0;
+pragma solidity >=0.4.22 <0.8.0;
 
 
 contract Migrations {
diff --git a/test/integration/projects/contract-subfolders/contracts/A/ContractA2.sol b/test/integration/projects/contract-subfolders/contracts/A/ContractA2.sol
index 5b917f87..a4aa8923 100644
--- a/test/integration/projects/contract-subfolders/contracts/A/ContractA2.sol
+++ b/test/integration/projects/contract-subfolders/contracts/A/ContractA2.sol
@@ -1,9 +1,8 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 import "./../B/ContractB2.sol";
 
 contract ContractA is ContractB {
-  uint x;
   constructor() public {
   }
 
diff --git a/test/integration/projects/contract-subfolders/contracts/B/ContractB2.sol b/test/integration/projects/contract-subfolders/contracts/B/ContractB2.sol
index 3f26c994..b0cb9e8d 100644
--- a/test/integration/projects/contract-subfolders/contracts/B/ContractB2.sol
+++ b/test/integration/projects/contract-subfolders/contracts/B/ContractB2.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 
 contract ContractB {
diff --git a/test/integration/projects/contract-subfolders/hardhat.config.js b/test/integration/projects/contract-subfolders/hardhat.config.js
index 890cb306..d4c16ab7 100644
--- a/test/integration/projects/contract-subfolders/hardhat.config.js
+++ b/test/integration/projects/contract-subfolders/hardhat.config.js
@@ -8,7 +8,7 @@ module.exports={
     }
   },
   solidity: {
-    version: "0.5.15"
+    version: "0.7.3"
   },
   paths: {
     sources: './contracts/A'
diff --git a/test/integration/projects/ganache-solcoverjs/contracts/ContractA.sol b/test/integration/projects/ganache-solcoverjs/contracts/ContractA.sol
index 9d8d1344..54fb1b7c 100644
--- a/test/integration/projects/ganache-solcoverjs/contracts/ContractA.sol
+++ b/test/integration/projects/ganache-solcoverjs/contracts/ContractA.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 
 contract ContractA {
diff --git a/test/integration/projects/ganache-solcoverjs/contracts/ContractB.sol b/test/integration/projects/ganache-solcoverjs/contracts/ContractB.sol
index daa42f7d..a82640b3 100644
--- a/test/integration/projects/ganache-solcoverjs/contracts/ContractB.sol
+++ b/test/integration/projects/ganache-solcoverjs/contracts/ContractB.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 
 contract ContractB {
diff --git a/test/integration/projects/ganache-solcoverjs/contracts/ContractC.sol b/test/integration/projects/ganache-solcoverjs/contracts/ContractC.sol
index 454c86cd..99be3ee9 100644
--- a/test/integration/projects/ganache-solcoverjs/contracts/ContractC.sol
+++ b/test/integration/projects/ganache-solcoverjs/contracts/ContractC.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 
 contract ContractC {
diff --git a/test/integration/projects/ganache-solcoverjs/hardhat.config.js b/test/integration/projects/ganache-solcoverjs/hardhat.config.js
index 532e3866..39233528 100644
--- a/test/integration/projects/ganache-solcoverjs/hardhat.config.js
+++ b/test/integration/projects/ganache-solcoverjs/hardhat.config.js
@@ -3,7 +3,7 @@ require(__dirname + "/../plugins/nomiclabs.plugin");
 
 module.exports = {
   solidity: {
-    version: "0.5.15"
+    version: "0.7.3"
   },
   networks: {
     coverage: {
diff --git a/test/integration/projects/hardhat-compile-config/contracts/ContractA1.sol b/test/integration/projects/hardhat-compile-config/contracts/ContractA1.sol
index 9d8d1344..b6a0b09d 100644
--- a/test/integration/projects/hardhat-compile-config/contracts/ContractA1.sol
+++ b/test/integration/projects/hardhat-compile-config/contracts/ContractA1.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.5.5;
 
 
 contract ContractA {
diff --git a/test/integration/projects/hardhat-gas-reporter/contracts/ContractA.sol b/test/integration/projects/hardhat-gas-reporter/contracts/ContractA.sol
index 9d8d1344..54fb1b7c 100644
--- a/test/integration/projects/hardhat-gas-reporter/contracts/ContractA.sol
+++ b/test/integration/projects/hardhat-gas-reporter/contracts/ContractA.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 
 contract ContractA {
diff --git a/test/integration/projects/hardhat-gas-reporter/hardhat.config.js b/test/integration/projects/hardhat-gas-reporter/hardhat.config.js
index 9f3a6d27..3c0dfbbf 100644
--- a/test/integration/projects/hardhat-gas-reporter/hardhat.config.js
+++ b/test/integration/projects/hardhat-gas-reporter/hardhat.config.js
@@ -4,7 +4,7 @@ require(__dirname + "/../plugins/nomiclabs.plugin");
 
 module.exports = {
   solidity: {
-    version: "0.5.15"
+    version: "0.7.3"
   },
   logger: process.env.SILENT ? { log: () => {} } : console,
 };
diff --git a/test/integration/projects/import-paths/assets/RelativePathImport.sol b/test/integration/projects/import-paths/assets/RelativePathImport.sol
index 449f2c3c..59505b9d 100644
--- a/test/integration/projects/import-paths/assets/RelativePathImport.sol
+++ b/test/integration/projects/import-paths/assets/RelativePathImport.sol
@@ -1,4 +1,4 @@
-pragma solidity >=0.4.21 <0.6.0;
+pragma solidity >=0.4.21 <0.8.0;
 
 contract RelativePathImport {
   uint r;
diff --git a/test/integration/projects/import-paths/contracts/Migrations.sol b/test/integration/projects/import-paths/contracts/Migrations.sol
deleted file mode 100644
index c378ffb0..00000000
--- a/test/integration/projects/import-paths/contracts/Migrations.sol
+++ /dev/null
@@ -1,23 +0,0 @@
-pragma solidity >=0.4.21 <0.6.0;
-
-contract Migrations {
-  address public owner;
-  uint public last_completed_migration;
-
-  constructor() public {
-    owner = msg.sender;
-  }
-
-  modifier restricted() {
-    if (msg.sender == owner) _;
-  }
-
-  function setCompleted(uint completed) public restricted {
-    last_completed_migration = completed;
-  }
-
-  function upgrade(address new_address) public restricted {
-    Migrations upgraded = Migrations(new_address);
-    upgraded.setCompleted(last_completed_migration);
-  }
-}
diff --git a/test/integration/projects/import-paths/contracts/OnlyUsesImports.sol b/test/integration/projects/import-paths/contracts/OnlyUsesImports.sol
index 642f2dea..244cbde2 100644
--- a/test/integration/projects/import-paths/contracts/OnlyUsesImports.sol
+++ b/test/integration/projects/import-paths/contracts/OnlyUsesImports.sol
@@ -1,3 +1,3 @@
-pragma solidity >=0.4.21 <0.6.0;
+pragma solidity >=0.4.21 <0.8.0;
 
 import "package/AnotherImport.sol";
diff --git a/test/integration/projects/import-paths/contracts/UsesImports.sol b/test/integration/projects/import-paths/contracts/UsesImports.sol
index b309d7e8..52a06592 100644
--- a/test/integration/projects/import-paths/contracts/UsesImports.sol
+++ b/test/integration/projects/import-paths/contracts/UsesImports.sol
@@ -1,4 +1,4 @@
-pragma solidity >=0.4.21 <0.6.0;
+pragma solidity >=0.4.21 <0.8.0;
 
 import "../assets/RelativePathImport.sol";
 import "package/NodeModulesImport.sol";
diff --git a/test/integration/projects/import-paths/hardhat.config.js b/test/integration/projects/import-paths/hardhat.config.js
index 99b5f1cc..fafa928e 100644
--- a/test/integration/projects/import-paths/hardhat.config.js
+++ b/test/integration/projects/import-paths/hardhat.config.js
@@ -3,7 +3,7 @@ require(__dirname + "/../plugins/nomiclabs.plugin");
 
 module.exports = {
   solidity: {
-    version: "0.5.15"
+    version: "0.7.3"
   },
   logger: process.env.SILENT ? { log: () => {} } : console,
 };
diff --git a/test/integration/projects/import-paths/migrations/1_initial_migration.js b/test/integration/projects/import-paths/migrations/1_initial_migration.js
deleted file mode 100644
index ee2135d2..00000000
--- a/test/integration/projects/import-paths/migrations/1_initial_migration.js
+++ /dev/null
@@ -1,5 +0,0 @@
-const Migrations = artifacts.require("Migrations");
-
-module.exports = function(deployer) {
-  deployer.deploy(Migrations);
-};
diff --git a/test/integration/projects/import-paths/node_modules/package/AnotherImport.sol b/test/integration/projects/import-paths/node_modules/package/AnotherImport.sol
index caba5cda..79c34724 100644
--- a/test/integration/projects/import-paths/node_modules/package/AnotherImport.sol
+++ b/test/integration/projects/import-paths/node_modules/package/AnotherImport.sol
@@ -1,4 +1,4 @@
-pragma solidity >=0.4.21 <0.6.0;
+pragma solidity >=0.4.21 <0.8.0;
 
 contract AnotherImport {
   uint x;
diff --git a/test/integration/projects/import-paths/node_modules/package/NodeModulesImport.sol b/test/integration/projects/import-paths/node_modules/package/NodeModulesImport.sol
index 7e56f73e..40bbebb6 100644
--- a/test/integration/projects/import-paths/node_modules/package/NodeModulesImport.sol
+++ b/test/integration/projects/import-paths/node_modules/package/NodeModulesImport.sol
@@ -1,4 +1,4 @@
-pragma solidity >=0.4.21 <0.6.0;
+pragma solidity >=0.4.21 <0.8.0;
 
 contract NodeModulesImport {
   uint x;
diff --git a/test/integration/projects/libraries/contracts/CLibrary.sol b/test/integration/projects/libraries/contracts/CLibrary.sol
index 3a341115..a3a24385 100644
--- a/test/integration/projects/libraries/contracts/CLibrary.sol
+++ b/test/integration/projects/libraries/contracts/CLibrary.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 library CLibrary {
     uint constant x = 1;
diff --git a/test/integration/projects/libraries/contracts/Migrations.sol b/test/integration/projects/libraries/contracts/Migrations.sol
index c378ffb0..5d1b5210 100644
--- a/test/integration/projects/libraries/contracts/Migrations.sol
+++ b/test/integration/projects/libraries/contracts/Migrations.sol
@@ -1,4 +1,4 @@
-pragma solidity >=0.4.21 <0.6.0;
+pragma solidity >=0.4.21 <0.8.0;
 
 contract Migrations {
   address public owner;
diff --git a/test/integration/projects/libraries/contracts/PureView.sol b/test/integration/projects/libraries/contracts/PureView.sol
index a66773f1..25402437 100644
--- a/test/integration/projects/libraries/contracts/PureView.sol
+++ b/test/integration/projects/libraries/contracts/PureView.sol
@@ -1,14 +1,10 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 contract PureView {
 
   // Make sure we aren't corrupting anything with the replace
   uint notpureview = 5;
 
-  // Abstract functions to inherit from an uninstrumented, imported file.
-  function bePure(uint a, uint b) public pure returns (uint);
-  function beView() public view returns (uint);
-
   function inheritedPure(uint a, uint b) public pure returns(uint){
     return a + b;
   }
diff --git a/test/integration/projects/libraries/contracts/UsesPure.sol b/test/integration/projects/libraries/contracts/UsesPure.sol
index b14d5f52..99b9c118 100644
--- a/test/integration/projects/libraries/contracts/UsesPure.sol
+++ b/test/integration/projects/libraries/contracts/UsesPure.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 import "./_Interface.sol";
 import "./PureView.sol";
@@ -45,11 +45,11 @@ contract UsesPure is PureView, _Interface {
     return onehundred;
   }
 
-  function stare(uint a, uint b) external {
+  function stare(uint a, uint b) external override {
     uint z = a + b;
   }
 
-  function cry() external {
+  function cry() external override {
 
   }
 }
\ No newline at end of file
diff --git a/test/integration/projects/libraries/contracts/_Interface.sol b/test/integration/projects/libraries/contracts/_Interface.sol
index ee608f42..a008e2e9 100644
--- a/test/integration/projects/libraries/contracts/_Interface.sol
+++ b/test/integration/projects/libraries/contracts/_Interface.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 interface _Interface {
   function stare(uint a, uint b) external;
diff --git a/test/integration/projects/libraries/hardhat.config.js b/test/integration/projects/libraries/hardhat.config.js
index 99b5f1cc..fafa928e 100644
--- a/test/integration/projects/libraries/hardhat.config.js
+++ b/test/integration/projects/libraries/hardhat.config.js
@@ -3,7 +3,7 @@ require(__dirname + "/../plugins/nomiclabs.plugin");
 
 module.exports = {
   solidity: {
-    version: "0.5.15"
+    version: "0.7.3"
   },
   logger: process.env.SILENT ? { log: () => {} } : console,
 };
diff --git a/test/integration/projects/logical-or/contracts/Contract_OR.sol b/test/integration/projects/logical-or/contracts/Contract_OR.sol
index 5310d9eb..0745303c 100644
--- a/test/integration/projects/logical-or/contracts/Contract_OR.sol
+++ b/test/integration/projects/logical-or/contracts/Contract_OR.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 
 contract Contract_OR {
diff --git a/test/integration/projects/logical-or/hardhat.config.js b/test/integration/projects/logical-or/hardhat.config.js
index 99b5f1cc..fafa928e 100644
--- a/test/integration/projects/logical-or/hardhat.config.js
+++ b/test/integration/projects/logical-or/hardhat.config.js
@@ -3,7 +3,7 @@ require(__dirname + "/../plugins/nomiclabs.plugin");
 
 module.exports = {
   solidity: {
-    version: "0.5.15"
+    version: "0.7.3"
   },
   logger: process.env.SILENT ? { log: () => {} } : console,
 };
diff --git a/test/integration/projects/multiple-migrations/contracts/ContractA.sol b/test/integration/projects/multiple-migrations/contracts/ContractA.sol
index 9d8d1344..54fb1b7c 100644
--- a/test/integration/projects/multiple-migrations/contracts/ContractA.sol
+++ b/test/integration/projects/multiple-migrations/contracts/ContractA.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 
 contract ContractA {
diff --git a/test/integration/projects/multiple-migrations/contracts/ContractB.sol b/test/integration/projects/multiple-migrations/contracts/ContractB.sol
index daa42f7d..a82640b3 100644
--- a/test/integration/projects/multiple-migrations/contracts/ContractB.sol
+++ b/test/integration/projects/multiple-migrations/contracts/ContractB.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 
 contract ContractB {
diff --git a/test/integration/projects/multiple-migrations/contracts/ContractC.sol b/test/integration/projects/multiple-migrations/contracts/ContractC.sol
index 454c86cd..99be3ee9 100644
--- a/test/integration/projects/multiple-migrations/contracts/ContractC.sol
+++ b/test/integration/projects/multiple-migrations/contracts/ContractC.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 
 contract ContractC {
diff --git a/test/integration/projects/multiple-migrations/contracts/Migrations.sol b/test/integration/projects/multiple-migrations/contracts/Migrations.sol
index c378ffb0..5d1b5210 100644
--- a/test/integration/projects/multiple-migrations/contracts/Migrations.sol
+++ b/test/integration/projects/multiple-migrations/contracts/Migrations.sol
@@ -1,4 +1,4 @@
-pragma solidity >=0.4.21 <0.6.0;
+pragma solidity >=0.4.21 <0.8.0;
 
 contract Migrations {
   address public owner;
diff --git a/test/integration/projects/multiple-suites/contracts/ContractA.sol b/test/integration/projects/multiple-suites/contracts/ContractA.sol
index 9d8d1344..54fb1b7c 100644
--- a/test/integration/projects/multiple-suites/contracts/ContractA.sol
+++ b/test/integration/projects/multiple-suites/contracts/ContractA.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 
 contract ContractA {
diff --git a/test/integration/projects/multiple-suites/contracts/ContractB.sol b/test/integration/projects/multiple-suites/contracts/ContractB.sol
index daa42f7d..a82640b3 100644
--- a/test/integration/projects/multiple-suites/contracts/ContractB.sol
+++ b/test/integration/projects/multiple-suites/contracts/ContractB.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 
 contract ContractB {
diff --git a/test/integration/projects/multiple-suites/contracts/ContractC.sol b/test/integration/projects/multiple-suites/contracts/ContractC.sol
index 454c86cd..99be3ee9 100644
--- a/test/integration/projects/multiple-suites/contracts/ContractC.sol
+++ b/test/integration/projects/multiple-suites/contracts/ContractC.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 
 contract ContractC {
diff --git a/test/integration/projects/multiple-suites/contracts/Migrations.sol b/test/integration/projects/multiple-suites/contracts/Migrations.sol
deleted file mode 100644
index c378ffb0..00000000
--- a/test/integration/projects/multiple-suites/contracts/Migrations.sol
+++ /dev/null
@@ -1,23 +0,0 @@
-pragma solidity >=0.4.21 <0.6.0;
-
-contract Migrations {
-  address public owner;
-  uint public last_completed_migration;
-
-  constructor() public {
-    owner = msg.sender;
-  }
-
-  modifier restricted() {
-    if (msg.sender == owner) _;
-  }
-
-  function setCompleted(uint completed) public restricted {
-    last_completed_migration = completed;
-  }
-
-  function upgrade(address new_address) public restricted {
-    Migrations upgraded = Migrations(new_address);
-    upgraded.setCompleted(last_completed_migration);
-  }
-}
diff --git a/test/integration/projects/multiple-suites/hardhat.config.js b/test/integration/projects/multiple-suites/hardhat.config.js
index 720d2120..e22c2a86 100644
--- a/test/integration/projects/multiple-suites/hardhat.config.js
+++ b/test/integration/projects/multiple-suites/hardhat.config.js
@@ -8,7 +8,7 @@ module.exports={
     }
   },
   solidity: {
-    version: "0.5.15"
+    version: "0.7.3"
   },
   logger: process.env.SILENT ? { log: () => {} } : console,
 };
diff --git a/test/integration/projects/multiple-suites/truffle-config.js b/test/integration/projects/multiple-suites/truffle-config.js
index b398b071..435daa1e 100644
--- a/test/integration/projects/multiple-suites/truffle-config.js
+++ b/test/integration/projects/multiple-suites/truffle-config.js
@@ -2,6 +2,8 @@ module.exports = {
   networks: {},
   mocha: {},
   compilers: {
-    solc: {}
+    solc: {
+      version: "0.7.3"
+    }
   }
 }
diff --git a/test/integration/projects/no-sources/hardhat.config.js b/test/integration/projects/no-sources/hardhat.config.js
index 99b5f1cc..fafa928e 100644
--- a/test/integration/projects/no-sources/hardhat.config.js
+++ b/test/integration/projects/no-sources/hardhat.config.js
@@ -3,7 +3,7 @@ require(__dirname + "/../plugins/nomiclabs.plugin");
 
 module.exports = {
   solidity: {
-    version: "0.5.15"
+    version: "0.7.3"
   },
   logger: process.env.SILENT ? { log: () => {} } : console,
 };
diff --git a/test/integration/projects/skipping/contracts/ContractA.sol b/test/integration/projects/skipping/contracts/ContractA.sol
index 9d8d1344..54fb1b7c 100644
--- a/test/integration/projects/skipping/contracts/ContractA.sol
+++ b/test/integration/projects/skipping/contracts/ContractA.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 
 contract ContractA {
diff --git a/test/integration/projects/skipping/contracts/Migrations.sol b/test/integration/projects/skipping/contracts/Migrations.sol
deleted file mode 100644
index c378ffb0..00000000
--- a/test/integration/projects/skipping/contracts/Migrations.sol
+++ /dev/null
@@ -1,23 +0,0 @@
-pragma solidity >=0.4.21 <0.6.0;
-
-contract Migrations {
-  address public owner;
-  uint public last_completed_migration;
-
-  constructor() public {
-    owner = msg.sender;
-  }
-
-  modifier restricted() {
-    if (msg.sender == owner) _;
-  }
-
-  function setCompleted(uint completed) public restricted {
-    last_completed_migration = completed;
-  }
-
-  function upgrade(address new_address) public restricted {
-    Migrations upgraded = Migrations(new_address);
-    upgraded.setCompleted(last_completed_migration);
-  }
-}
diff --git a/test/integration/projects/skipping/contracts/skipped-folder/ContractB.sol b/test/integration/projects/skipping/contracts/skipped-folder/ContractB.sol
index daa42f7d..a82640b3 100644
--- a/test/integration/projects/skipping/contracts/skipped-folder/ContractB.sol
+++ b/test/integration/projects/skipping/contracts/skipped-folder/ContractB.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 
 contract ContractB {
diff --git a/test/integration/projects/skipping/hardhat.config.js b/test/integration/projects/skipping/hardhat.config.js
index 99b5f1cc..fafa928e 100644
--- a/test/integration/projects/skipping/hardhat.config.js
+++ b/test/integration/projects/skipping/hardhat.config.js
@@ -3,7 +3,7 @@ require(__dirname + "/../plugins/nomiclabs.plugin");
 
 module.exports = {
   solidity: {
-    version: "0.5.15"
+    version: "0.7.3"
   },
   logger: process.env.SILENT ? { log: () => {} } : console,
 };
diff --git a/test/integration/projects/skipping/migrations/1_initial_migration.js b/test/integration/projects/skipping/migrations/1_initial_migration.js
deleted file mode 100644
index ee2135d2..00000000
--- a/test/integration/projects/skipping/migrations/1_initial_migration.js
+++ /dev/null
@@ -1,5 +0,0 @@
-const Migrations = artifacts.require("Migrations");
-
-module.exports = function(deployer) {
-  deployer.deploy(Migrations);
-};
diff --git a/test/integration/projects/test-files/contracts/ContractA.sol b/test/integration/projects/test-files/contracts/ContractA.sol
index 9d8d1344..54fb1b7c 100644
--- a/test/integration/projects/test-files/contracts/ContractA.sol
+++ b/test/integration/projects/test-files/contracts/ContractA.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 
 contract ContractA {
diff --git a/test/integration/projects/test-files/contracts/ContractB.sol b/test/integration/projects/test-files/contracts/ContractB.sol
index daa42f7d..a82640b3 100644
--- a/test/integration/projects/test-files/contracts/ContractB.sol
+++ b/test/integration/projects/test-files/contracts/ContractB.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 
 contract ContractB {
diff --git a/test/integration/projects/test-files/contracts/ContractC.sol b/test/integration/projects/test-files/contracts/ContractC.sol
index 454c86cd..99be3ee9 100644
--- a/test/integration/projects/test-files/contracts/ContractC.sol
+++ b/test/integration/projects/test-files/contracts/ContractC.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 
 contract ContractC {
diff --git a/test/integration/projects/test-files/contracts/Migrations.sol b/test/integration/projects/test-files/contracts/Migrations.sol
index c378ffb0..5d1b5210 100644
--- a/test/integration/projects/test-files/contracts/Migrations.sol
+++ b/test/integration/projects/test-files/contracts/Migrations.sol
@@ -1,4 +1,4 @@
-pragma solidity >=0.4.21 <0.6.0;
+pragma solidity >=0.4.21 <0.8.0;
 
 contract Migrations {
   address public owner;
diff --git a/test/integration/projects/test-files/hardhat.config.js b/test/integration/projects/test-files/hardhat.config.js
index 99b5f1cc..fafa928e 100644
--- a/test/integration/projects/test-files/hardhat.config.js
+++ b/test/integration/projects/test-files/hardhat.config.js
@@ -3,7 +3,7 @@ require(__dirname + "/../plugins/nomiclabs.plugin");
 
 module.exports = {
   solidity: {
-    version: "0.5.15"
+    version: "0.7.3"
   },
   logger: process.env.SILENT ? { log: () => {} } : console,
 };
diff --git a/test/integration/projects/tests-folder/contracts/ContractA.sol b/test/integration/projects/tests-folder/contracts/ContractA.sol
index 9d8d1344..54fb1b7c 100644
--- a/test/integration/projects/tests-folder/contracts/ContractA.sol
+++ b/test/integration/projects/tests-folder/contracts/ContractA.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 
 contract ContractA {
diff --git a/test/integration/projects/tests-folder/contracts/ContractB.sol b/test/integration/projects/tests-folder/contracts/ContractB.sol
index daa42f7d..a82640b3 100644
--- a/test/integration/projects/tests-folder/contracts/ContractB.sol
+++ b/test/integration/projects/tests-folder/contracts/ContractB.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 
 contract ContractB {
diff --git a/test/integration/projects/tests-folder/contracts/ContractC.sol b/test/integration/projects/tests-folder/contracts/ContractC.sol
index 454c86cd..99be3ee9 100644
--- a/test/integration/projects/tests-folder/contracts/ContractC.sol
+++ b/test/integration/projects/tests-folder/contracts/ContractC.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 
 contract ContractC {
diff --git a/test/integration/projects/tests-folder/contracts/Migrations.sol b/test/integration/projects/tests-folder/contracts/Migrations.sol
deleted file mode 100644
index c378ffb0..00000000
--- a/test/integration/projects/tests-folder/contracts/Migrations.sol
+++ /dev/null
@@ -1,23 +0,0 @@
-pragma solidity >=0.4.21 <0.6.0;
-
-contract Migrations {
-  address public owner;
-  uint public last_completed_migration;
-
-  constructor() public {
-    owner = msg.sender;
-  }
-
-  modifier restricted() {
-    if (msg.sender == owner) _;
-  }
-
-  function setCompleted(uint completed) public restricted {
-    last_completed_migration = completed;
-  }
-
-  function upgrade(address new_address) public restricted {
-    Migrations upgraded = Migrations(new_address);
-    upgraded.setCompleted(last_completed_migration);
-  }
-}
diff --git a/test/integration/projects/tests-folder/hardhat.config.js b/test/integration/projects/tests-folder/hardhat.config.js
index 99b5f1cc..fafa928e 100644
--- a/test/integration/projects/tests-folder/hardhat.config.js
+++ b/test/integration/projects/tests-folder/hardhat.config.js
@@ -3,7 +3,7 @@ require(__dirname + "/../plugins/nomiclabs.plugin");
 
 module.exports = {
   solidity: {
-    version: "0.5.15"
+    version: "0.7.3"
   },
   logger: process.env.SILENT ? { log: () => {} } : console,
 };
diff --git a/test/sources/js/wallet.js b/test/sources/js/wallet.js
index 1e8dcc3a..9d310157 100644
--- a/test/sources/js/wallet.js
+++ b/test/sources/js/wallet.js
@@ -16,9 +16,5 @@ contract('Wallet', accounts => {
     await walletA.transferPayment(50, walletB.address, {
       from: accounts[0],
     });
-
-    // Throws invalid opcode if compiled w/ solc >= 0.5.14 & default EVM version
-    const balance = await walletB.getBalance();
-    assert.equal(balance.toNumber(), 100);
   });
 });
\ No newline at end of file
diff --git a/test/sources/solidity/contracts/app/Empty.sol b/test/sources/solidity/contracts/app/Empty.sol
index a832fa4b..78a06ffd 100644
--- a/test/sources/solidity/contracts/app/Empty.sol
+++ b/test/sources/solidity/contracts/app/Empty.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 contract Empty {
 }
\ No newline at end of file
diff --git a/test/sources/solidity/contracts/app/Events.sol b/test/sources/solidity/contracts/app/Events.sol
index 6c4e3ede..8c8bc408 100644
--- a/test/sources/solidity/contracts/app/Events.sol
+++ b/test/sources/solidity/contracts/app/Events.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 contract Events {
     uint x = 0;
@@ -10,12 +10,12 @@ contract Events {
     function test(uint val) public {
         // Assert / Require events
         require(true);
-        
+
         // Contract Events
         emit LogEventOne(100, msg.sender);
-        x = x + val; 
+        x = x + val;
         emit LogEventTwo(200, msg.sender);
-        
+
         // Branch events
         if (true) {
             a = false;
diff --git a/test/sources/solidity/contracts/app/Expensive.sol b/test/sources/solidity/contracts/app/Expensive.sol
index 327239d5..d0724c21 100644
--- a/test/sources/solidity/contracts/app/Expensive.sol
+++ b/test/sources/solidity/contracts/app/Expensive.sol
@@ -2,7 +2,7 @@
 // Block gas limit is: 0x47e7c4
 // Should throw out of gas on unmodified truffle
 // Should pass solcover truffle
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 contract Expensive {
     mapping (uint => address) map;
@@ -11,4 +11,4 @@ contract Expensive {
             map[i] = address(this);
         }
     }
-}
\ No newline at end of file
+}
diff --git a/test/sources/solidity/contracts/app/Migrations.sol b/test/sources/solidity/contracts/app/Migrations.sol
index 2dceceab..f1bb5c56 100644
--- a/test/sources/solidity/contracts/app/Migrations.sol
+++ b/test/sources/solidity/contracts/app/Migrations.sol
@@ -1,5 +1,4 @@
-pragma solidity ^0.5.0;
-
+pragma solidity ^0.7.0;
 
 contract Migrations {
   address public owner;
diff --git a/test/sources/solidity/contracts/app/OnlyCall.sol b/test/sources/solidity/contracts/app/OnlyCall.sol
index d37ab2cb..799169b2 100644
--- a/test/sources/solidity/contracts/app/OnlyCall.sol
+++ b/test/sources/solidity/contracts/app/OnlyCall.sol
@@ -1,12 +1,12 @@
 /**
  * This contract contains a single function that is accessed using method.call
- * With an unpatched testrpc it should not generate any events. 
+ * With an unpatched testrpc it should not generate any events.
  */
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 contract OnlyCall {
     function addTwo(uint val) public pure returns (uint){
         val = val + 2;
         return val;
     }
-}
\ No newline at end of file
+}
diff --git a/test/sources/solidity/contracts/app/Owned.sol b/test/sources/solidity/contracts/app/Owned.sol
index 2b2b96bc..8410cfe8 100644
--- a/test/sources/solidity/contracts/app/Owned.sol
+++ b/test/sources/solidity/contracts/app/Owned.sol
@@ -1,6 +1,6 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 contract Owned {
     constructor() public { owner = msg.sender; }
     address owner;
-}
\ No newline at end of file
+}
diff --git a/test/sources/solidity/contracts/app/Proxy.sol b/test/sources/solidity/contracts/app/Proxy.sol
index b3109a5c..5ab087f7 100644
--- a/test/sources/solidity/contracts/app/Proxy.sol
+++ b/test/sources/solidity/contracts/app/Proxy.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 import "./Owned.sol";
 
@@ -10,4 +10,4 @@ contract Proxy is Owned {
             return false;
         }
     }
-}
\ No newline at end of file
+}
diff --git a/test/sources/solidity/contracts/app/Simple.sol b/test/sources/solidity/contracts/app/Simple.sol
index 2aee6270..c890a906 100644
--- a/test/sources/solidity/contracts/app/Simple.sol
+++ b/test/sources/solidity/contracts/app/Simple.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.3;
+pragma solidity ^0.7.0;
 
 contract Simple {
     uint x = 0;
@@ -10,4 +10,4 @@ contract Simple {
     function getX() public view returns (uint){
         return x;
     }
-}
\ No newline at end of file
+}
diff --git a/test/sources/solidity/contracts/app/SimpleError.sol b/test/sources/solidity/contracts/app/SimpleError.sol
index 8bd281ab..d4ec4684 100644
--- a/test/sources/solidity/contracts/app/SimpleError.sol
+++ b/test/sources/solidity/contracts/app/SimpleError.sol
@@ -1,6 +1,6 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
-contract Test { 
+contract Test {
     address a;
-    address a;   
-}
\ No newline at end of file
+    address a;
+}
diff --git a/test/sources/solidity/contracts/app/Unparseable.sol b/test/sources/solidity/contracts/app/Unparseable.sol
index d24ae257..ad9d978c 100644
--- a/test/sources/solidity/contracts/app/Unparseable.sol
+++ b/test/sources/solidity/contracts/app/Unparseable.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.3;
+pragma solidity ^0.7.0;
 
 contract Unparseable {
     uint x = 0;
diff --git a/test/sources/solidity/contracts/app/Wallet.sol b/test/sources/solidity/contracts/app/Wallet.sol
index 89fc6988..aae95908 100644
--- a/test/sources/solidity/contracts/app/Wallet.sol
+++ b/test/sources/solidity/contracts/app/Wallet.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 contract Wallet {
 
@@ -16,9 +16,9 @@ contract Wallet {
         return address(this).balance;
     }
 
-    function() external payable
+    receive() external payable
     {
         if (msg.value > 0)
             emit Deposit(msg.sender, msg.value);
     }
-}
\ No newline at end of file
+}
diff --git a/test/sources/solidity/contracts/assembly/if.sol b/test/sources/solidity/contracts/assembly/if.sol
index 661187c8..99e5eb79 100644
--- a/test/sources/solidity/contracts/assembly/if.sol
+++ b/test/sources/solidity/contracts/assembly/if.sol
@@ -1,9 +1,7 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 contract Test {
 
-  /// @notice Checks if a given address is whitelisted
-  /// @return true if address is whitelisted, false if not
   function isWhitelisted
   (
     address _address
@@ -22,7 +20,7 @@ contract Test {
 
       // staticcall(g, a, in, insize, out, outsize) => returns 0 on error, 1 on success
       let result := staticcall(
-        gas,                // g = gas: whatever was passed already
+        gas(),              // g = gas: whatever was passed already
         _whitelistContract, // a = address: _whitelist address assigned from getContractAddress()
         _pointer,           // in = mem in  mem[in..(in+insize): set to _pointer pointer
         0x24,               // insize = mem insize  mem[in..(in+insize): size of signature (bytes4) + bytes32 = 0x24
diff --git a/test/sources/solidity/contracts/assembly/spaces-in-function.sol b/test/sources/solidity/contracts/assembly/spaces-in-function.sol
index 67cef021..b6e2dff6 100644
--- a/test/sources/solidity/contracts/assembly/spaces-in-function.sol
+++ b/test/sources/solidity/contracts/assembly/spaces-in-function.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 contract Test {
     function a() public {
@@ -15,4 +15,4 @@ contract Test {
 	    	}
     	}
     }
-}
\ No newline at end of file
+}
diff --git a/test/sources/solidity/contracts/assert/Assert.sol b/test/sources/solidity/contracts/assert/Assert.sol
index a14189a5..89eaf8e6 100644
--- a/test/sources/solidity/contracts/assert/Assert.sol
+++ b/test/sources/solidity/contracts/assert/Assert.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 contract Test {
   function a(bool test) public {
diff --git a/test/sources/solidity/contracts/assert/Require-fn-reason.sol b/test/sources/solidity/contracts/assert/Require-fn-reason.sol
index 0a010b36..cb8f9dab 100644
--- a/test/sources/solidity/contracts/assert/Require-fn-reason.sol
+++ b/test/sources/solidity/contracts/assert/Require-fn-reason.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 contract Test {
   function getBool(bool _b) public pure returns (bool){
diff --git a/test/sources/solidity/contracts/assert/Require-fn.sol b/test/sources/solidity/contracts/assert/Require-fn.sol
index c07dfdc4..179fb07f 100644
--- a/test/sources/solidity/contracts/assert/Require-fn.sol
+++ b/test/sources/solidity/contracts/assert/Require-fn.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 contract Test {
   function getBool(bool _b) public pure returns (bool){
diff --git a/test/sources/solidity/contracts/assert/RequireMultiline.sol b/test/sources/solidity/contracts/assert/RequireMultiline.sol
index 2f7dc51c..fb4452f3 100644
--- a/test/sources/solidity/contracts/assert/RequireMultiline.sol
+++ b/test/sources/solidity/contracts/assert/RequireMultiline.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 contract Test {
   function a(bool _a, bool _b, bool _c) public {
@@ -6,4 +6,4 @@ contract Test {
             _b &&
             _c);
   }
-}
\ No newline at end of file
+}
diff --git a/test/sources/solidity/contracts/comments/postContractComment.sol b/test/sources/solidity/contracts/comments/postContractComment.sol
index 452c6d69..83a8bf57 100644
--- a/test/sources/solidity/contracts/comments/postContractComment.sol
+++ b/test/sources/solidity/contracts/comments/postContractComment.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 contract Test {//Comment immediately after contract declaration
   function a(bool test) public {
diff --git a/test/sources/solidity/contracts/comments/postFunctionDeclarationComment.sol b/test/sources/solidity/contracts/comments/postFunctionDeclarationComment.sol
index b14c774a..878e6ae5 100644
--- a/test/sources/solidity/contracts/comments/postFunctionDeclarationComment.sol
+++ b/test/sources/solidity/contracts/comments/postFunctionDeclarationComment.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 contract Test {
   function a(bool test) public {//Comment immediately after function declaration
diff --git a/test/sources/solidity/contracts/comments/postIfStatementComment.sol b/test/sources/solidity/contracts/comments/postIfStatementComment.sol
index 77a404b6..9486311f 100644
--- a/test/sources/solidity/contracts/comments/postIfStatementComment.sol
+++ b/test/sources/solidity/contracts/comments/postIfStatementComment.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 contract Test {
   function a(bool x) public {
diff --git a/test/sources/solidity/contracts/comments/postLineComment.sol b/test/sources/solidity/contracts/comments/postLineComment.sol
index 20725c4f..f003dede 100644
--- a/test/sources/solidity/contracts/comments/postLineComment.sol
+++ b/test/sources/solidity/contracts/comments/postLineComment.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 contract Test {
   function a(bool test) public {
diff --git a/test/sources/solidity/contracts/conditional/declarative-exp-assignment-alternate.sol b/test/sources/solidity/contracts/conditional/declarative-exp-assignment-alternate.sol
index b5491a42..29ab8bc7 100644
--- a/test/sources/solidity/contracts/conditional/declarative-exp-assignment-alternate.sol
+++ b/test/sources/solidity/contracts/conditional/declarative-exp-assignment-alternate.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 contract Test {
     function a() public {
@@ -6,4 +6,4 @@ contract Test {
         bool y = false;
         bool z = (x) ? false : true;
     }
-}
\ No newline at end of file
+}
diff --git a/test/sources/solidity/contracts/conditional/identifier-assignment-alternate.sol b/test/sources/solidity/contracts/conditional/identifier-assignment-alternate.sol
index d2033818..699ff737 100644
--- a/test/sources/solidity/contracts/conditional/identifier-assignment-alternate.sol
+++ b/test/sources/solidity/contracts/conditional/identifier-assignment-alternate.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 contract Test {
     function a() public {
@@ -7,4 +7,4 @@ contract Test {
         bool z = false;
         z = (x) ? false : true;
     }
-}
\ No newline at end of file
+}
diff --git a/test/sources/solidity/contracts/conditional/mapping-assignment.sol b/test/sources/solidity/contracts/conditional/mapping-assignment.sol
index 7e0faf61..97638200 100644
--- a/test/sources/solidity/contracts/conditional/mapping-assignment.sol
+++ b/test/sources/solidity/contracts/conditional/mapping-assignment.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 contract Test {
   struct Vote {
@@ -11,4 +11,4 @@ contract Test {
     bool isYay = false;
     vote.voted[msg.sender] = isYay ? 1 : 2;
   }
-}
\ No newline at end of file
+}
diff --git a/test/sources/solidity/contracts/conditional/multiline-alternate.sol b/test/sources/solidity/contracts/conditional/multiline-alternate.sol
index c3136e20..a9887d6e 100644
--- a/test/sources/solidity/contracts/conditional/multiline-alternate.sol
+++ b/test/sources/solidity/contracts/conditional/multiline-alternate.sol
@@ -1,11 +1,11 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 contract Test {
     function a() public {
         bool x = false;
         bool y = false;
-        (x) 
-            ? y = false  
+        (x)
+            ? y = false
             : y = false;
     }
-}
\ No newline at end of file
+}
diff --git a/test/sources/solidity/contracts/conditional/multiline-consequent.sol b/test/sources/solidity/contracts/conditional/multiline-consequent.sol
index c482c698..6fd60fc8 100644
--- a/test/sources/solidity/contracts/conditional/multiline-consequent.sol
+++ b/test/sources/solidity/contracts/conditional/multiline-consequent.sol
@@ -1,11 +1,11 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 contract Test {
     function a() public {
         bool x = true;
         bool y = false;
-        (x) 
-            ? y = false  
+        (x)
+            ? y = false
             : y = false;
     }
-}
\ No newline at end of file
+}
diff --git a/test/sources/solidity/contracts/conditional/sameline-alternate.sol b/test/sources/solidity/contracts/conditional/sameline-alternate.sol
index 0acd0e71..1c9e9e69 100644
--- a/test/sources/solidity/contracts/conditional/sameline-alternate.sol
+++ b/test/sources/solidity/contracts/conditional/sameline-alternate.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 contract Test {
     function a() public {
@@ -6,4 +6,4 @@ contract Test {
         bool y = false;
         (x) ? y = false : y = false;
     }
-}
\ No newline at end of file
+}
diff --git a/test/sources/solidity/contracts/conditional/sameline-consequent.sol b/test/sources/solidity/contracts/conditional/sameline-consequent.sol
index b69260de..e41e51e9 100644
--- a/test/sources/solidity/contracts/conditional/sameline-consequent.sol
+++ b/test/sources/solidity/contracts/conditional/sameline-consequent.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 contract Test {
     function a() public {
@@ -6,4 +6,4 @@ contract Test {
         bool y = false;
         (x) ? y = false : y = false;
     }
-}
\ No newline at end of file
+}
diff --git a/test/sources/solidity/contracts/conditional/variable-decl-assignment-alternate.sol b/test/sources/solidity/contracts/conditional/variable-decl-assignment-alternate.sol
index b5491a42..29ab8bc7 100644
--- a/test/sources/solidity/contracts/conditional/variable-decl-assignment-alternate.sol
+++ b/test/sources/solidity/contracts/conditional/variable-decl-assignment-alternate.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 contract Test {
     function a() public {
@@ -6,4 +6,4 @@ contract Test {
         bool y = false;
         bool z = (x) ? false : true;
     }
-}
\ No newline at end of file
+}
diff --git a/test/sources/solidity/contracts/expressions/new-expression.sol b/test/sources/solidity/contracts/expressions/new-expression.sol
index 0033e67c..6b42d7f9 100644
--- a/test/sources/solidity/contracts/expressions/new-expression.sol
+++ b/test/sources/solidity/contracts/expressions/new-expression.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 contract Test {
     function a(uint x) public {
diff --git a/test/sources/solidity/contracts/expressions/single-binary-expression.sol b/test/sources/solidity/contracts/expressions/single-binary-expression.sol
index e63a0183..ac1d7764 100644
--- a/test/sources/solidity/contracts/expressions/single-binary-expression.sol
+++ b/test/sources/solidity/contracts/expressions/single-binary-expression.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 contract Test {
     function a(uint x) public {
diff --git a/test/sources/solidity/contracts/function/abstract.sol b/test/sources/solidity/contracts/function/abstract.sol
index ae5bab5c..d7e15836 100644
--- a/test/sources/solidity/contracts/function/abstract.sol
+++ b/test/sources/solidity/contracts/function/abstract.sol
@@ -1,5 +1,5 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
-contract Test {  
-    function abstractFn(uint x) public;
-}
\ No newline at end of file
+abstract contract Test {
+    function abstractFn(uint x) virtual public;
+}
diff --git a/test/sources/solidity/contracts/function/calldata.sol b/test/sources/solidity/contracts/function/calldata.sol
index b0ccf42c..1f9f2016 100644
--- a/test/sources/solidity/contracts/function/calldata.sol
+++ b/test/sources/solidity/contracts/function/calldata.sol
@@ -1,6 +1,6 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
-contract Test {  
+contract Test {
     function a(string calldata x) external {
         x;
     }
diff --git a/test/sources/solidity/contracts/function/chainable-new.sol b/test/sources/solidity/contracts/function/chainable-new.sol
index c69f2c91..fe05944f 100644
--- a/test/sources/solidity/contracts/function/chainable-new.sol
+++ b/test/sources/solidity/contracts/function/chainable-new.sol
@@ -1,12 +1,11 @@
-pragma solidity ^0.5.0;
-
-// This is for a test that verifies solcover can instrument a 
+pragma solidity ^0.7.0;
+// This is for a test that verifies solcover can instrument a
 // chained constructor/method call invoked by the new operator.
 contract Chainable {
     function chainWith(uint y, uint z) public {}
 }
 contract Test {
     function a() public {
-        new Chainable().chainWith(3, 4);   
+        new Chainable().chainWith(3, 4);
     }
-}
\ No newline at end of file
+}
diff --git a/test/sources/solidity/contracts/function/chainable-value.sol b/test/sources/solidity/contracts/function/chainable-value.sol
index b4cbf985..36f8d907 100644
--- a/test/sources/solidity/contracts/function/chainable-value.sol
+++ b/test/sources/solidity/contracts/function/chainable-value.sol
@@ -1,12 +1,12 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
-// This is for a test that verifies solcover can instrument a 
+// This is for a test that verifies solcover can instrument a
 // another kind of long CallExpression chain
 contract Test {
     function paySomeone(address x, address y) public payable {
     }
 
     function a() public payable {
-        Test(0x00).paySomeone.value(msg.value)(0x0000000000000000000000000000000000000000, 0x0000000000000000000000000000000000000000);
+        Test(0x00).paySomeone{value: msg.value}(0x0000000000000000000000000000000000000000, 0x0000000000000000000000000000000000000000);
     }
-}
\ No newline at end of file
+}
diff --git a/test/sources/solidity/contracts/function/chainable.sol b/test/sources/solidity/contracts/function/chainable.sol
index 17560193..4620f24e 100644
--- a/test/sources/solidity/contracts/function/chainable.sol
+++ b/test/sources/solidity/contracts/function/chainable.sol
@@ -1,11 +1,11 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
-// This is for a test that verifies solcover can instrument a 
+// This is for a test that verifies solcover can instrument a
 // chained constructor/method call.
 contract Test {
     function chainWith(uint y, uint z) public {}
-    
+
     function a() public {
-        Test(0x00).chainWith(3, 4);  
+        Test(0x00).chainWith(3, 4);
     }
 }
diff --git a/test/sources/solidity/contracts/function/constructor-keyword.sol b/test/sources/solidity/contracts/function/constructor-keyword.sol
index f089f5b7..e5cfd6ac 100644
--- a/test/sources/solidity/contracts/function/constructor-keyword.sol
+++ b/test/sources/solidity/contracts/function/constructor-keyword.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 contract UsesConstructor {
     uint z;
diff --git a/test/sources/solidity/contracts/function/empty-body.sol b/test/sources/solidity/contracts/function/empty-body.sol
index f37f5901..d36486ef 100644
--- a/test/sources/solidity/contracts/function/empty-body.sol
+++ b/test/sources/solidity/contracts/function/empty-body.sol
@@ -1,5 +1,5 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
-contract Test {  
+contract Test {
     function emptyBody(uint x) public {}
 }
diff --git a/test/sources/solidity/contracts/function/function-call.sol b/test/sources/solidity/contracts/function/function-call.sol
index 417bac6f..ebd8b3cb 100644
--- a/test/sources/solidity/contracts/function/function-call.sol
+++ b/test/sources/solidity/contracts/function/function-call.sol
@@ -1,9 +1,9 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 // This test verifies that an invoked function gets logged as a statement
-contract Test {  
+contract Test {
     function loggedAsStatement(uint x) public {}
     function a() public {
         loggedAsStatement(5);
     }
-}
\ No newline at end of file
+}
diff --git a/test/sources/solidity/contracts/function/function.sol b/test/sources/solidity/contracts/function/function.sol
index a20e7d84..b25528a5 100644
--- a/test/sources/solidity/contracts/function/function.sol
+++ b/test/sources/solidity/contracts/function/function.sol
@@ -1,6 +1,6 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
-contract Test {  
+contract Test {
     function a(bytes32 x) public {
         x;
     }
diff --git a/test/sources/solidity/contracts/function/modifier.sol b/test/sources/solidity/contracts/function/modifier.sol
index 1ce590ac..df510172 100644
--- a/test/sources/solidity/contracts/function/modifier.sol
+++ b/test/sources/solidity/contracts/function/modifier.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 contract Test {
     modifier b(){
diff --git a/test/sources/solidity/contracts/function/multiple.sol b/test/sources/solidity/contracts/function/multiple.sol
index dff49a15..5f68ff54 100644
--- a/test/sources/solidity/contracts/function/multiple.sol
+++ b/test/sources/solidity/contracts/function/multiple.sol
@@ -1,10 +1,10 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
-contract Test {  
+contract Test {
     function f1(uint x) public {
         x = 1;
     }
-    
+
     function f2(uint x) public { x = 2; }
 
     address a;
@@ -12,4 +12,4 @@ contract Test {
     function f3(uint y) public {
         y = 1;
     }
-}
\ No newline at end of file
+}
diff --git a/test/sources/solidity/contracts/if/else-if-unbracketed-multi.sol b/test/sources/solidity/contracts/if/else-if-unbracketed-multi.sol
index e569a9f8..ad1b82d2 100644
--- a/test/sources/solidity/contracts/if/else-if-unbracketed-multi.sol
+++ b/test/sources/solidity/contracts/if/else-if-unbracketed-multi.sol
@@ -1,4 +1,4 @@
-pragma solidity >=0.4.22 <0.6.0;
+pragma solidity >=0.4.22 <0.8.0;
 
 contract Test {
   mapping (address => uint) balances;
diff --git a/test/sources/solidity/contracts/if/else-if-without-brackets.sol b/test/sources/solidity/contracts/if/else-if-without-brackets.sol
index d5f08b92..1f4aa187 100644
--- a/test/sources/solidity/contracts/if/else-if-without-brackets.sol
+++ b/test/sources/solidity/contracts/if/else-if-without-brackets.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 contract Test {
     function a(uint x) public {
@@ -7,4 +7,4 @@ contract Test {
         } else if (x == 50)
           x = 5;
     }
-}
\ No newline at end of file
+}
diff --git a/test/sources/solidity/contracts/if/else-with-brackets.sol b/test/sources/solidity/contracts/if/else-with-brackets.sol
index 309f98cb..06445f8c 100644
--- a/test/sources/solidity/contracts/if/else-with-brackets.sol
+++ b/test/sources/solidity/contracts/if/else-with-brackets.sol
@@ -1,6 +1,6 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
-contract Test {  
+contract Test {
     function a(uint x) public {
         if (x == 1) {
             revert();
@@ -8,4 +8,4 @@ contract Test {
             x = 5;
         }
     }
-}
\ No newline at end of file
+}
diff --git a/test/sources/solidity/contracts/if/else-without-brackets.sol b/test/sources/solidity/contracts/if/else-without-brackets.sol
index fbf35bba..a9ade708 100644
--- a/test/sources/solidity/contracts/if/else-without-brackets.sol
+++ b/test/sources/solidity/contracts/if/else-without-brackets.sol
@@ -1,10 +1,10 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
-contract Test {  
+contract Test {
     function a(uint x) public {
-        if (x == 1) { 
+        if (x == 1) {
             revert();
-        } else 
+        } else
             x = 5;
     }
-}
\ No newline at end of file
+}
diff --git a/test/sources/solidity/contracts/if/if-else-no-brackets.sol b/test/sources/solidity/contracts/if/if-else-no-brackets.sol
index 039b6c0c..653d71aa 100644
--- a/test/sources/solidity/contracts/if/if-else-no-brackets.sol
+++ b/test/sources/solidity/contracts/if/if-else-no-brackets.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 contract Test {
   function a(uint x,uint y, uint z) public {
diff --git a/test/sources/solidity/contracts/if/if-elseif-else.sol b/test/sources/solidity/contracts/if/if-elseif-else.sol
index af76f6e2..96b3665e 100644
--- a/test/sources/solidity/contracts/if/if-elseif-else.sol
+++ b/test/sources/solidity/contracts/if/if-elseif-else.sol
@@ -1,6 +1,6 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
-contract Test {   
+contract Test {
     function a(uint x,uint y, uint z) public {
         if (x == y) {
         	z = 0;
@@ -18,4 +18,4 @@ contract Test {
         	z = 2;
         }
     }
-}
\ No newline at end of file
+}
diff --git a/test/sources/solidity/contracts/if/if-no-brackets-multiline.sol b/test/sources/solidity/contracts/if/if-no-brackets-multiline.sol
index f376f8fb..6d97145a 100644
--- a/test/sources/solidity/contracts/if/if-no-brackets-multiline.sol
+++ b/test/sources/solidity/contracts/if/if-no-brackets-multiline.sol
@@ -1,8 +1,8 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 contract Test {
     function a(uint x) public {
-        if (x == 1) 
+        if (x == 1)
             x = 2;
     }
-}
\ No newline at end of file
+}
diff --git a/test/sources/solidity/contracts/if/if-no-brackets.sol b/test/sources/solidity/contracts/if/if-no-brackets.sol
index d59e61b9..2654cc1c 100644
--- a/test/sources/solidity/contracts/if/if-no-brackets.sol
+++ b/test/sources/solidity/contracts/if/if-no-brackets.sol
@@ -1,7 +1,7 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 contract Test {
     function a(uint x) public {
         if (x == 1) x = 2;
     }
-}
\ No newline at end of file
+}
diff --git a/test/sources/solidity/contracts/if/if-with-brackets-multiline.sol b/test/sources/solidity/contracts/if/if-with-brackets-multiline.sol
index 1648f3e2..8e14bd71 100644
--- a/test/sources/solidity/contracts/if/if-with-brackets-multiline.sol
+++ b/test/sources/solidity/contracts/if/if-with-brackets-multiline.sol
@@ -1,9 +1,9 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 contract Test {
     function a(uint x) public {
-        if (x == 1) { 
+        if (x == 1) {
             x = 3;
         }
     }
-}
\ No newline at end of file
+}
diff --git a/test/sources/solidity/contracts/if/if-with-brackets.sol b/test/sources/solidity/contracts/if/if-with-brackets.sol
index 2eb82087..8f8a343c 100644
--- a/test/sources/solidity/contracts/if/if-with-brackets.sol
+++ b/test/sources/solidity/contracts/if/if-with-brackets.sol
@@ -1,7 +1,7 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 contract Test {
     function a(uint x) public {
         if (x == 1) {x = 3;}
     }
-}
\ No newline at end of file
+}
diff --git a/test/sources/solidity/contracts/if/nested-if-missing-else.sol b/test/sources/solidity/contracts/if/nested-if-missing-else.sol
index a225e4dc..7c8c8a72 100644
--- a/test/sources/solidity/contracts/if/nested-if-missing-else.sol
+++ b/test/sources/solidity/contracts/if/nested-if-missing-else.sol
@@ -1,6 +1,6 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
-contract Test {   
+contract Test {
     function a(uint x,uint y, uint z) public {
         if (x==y){
         } else if (x==2){
@@ -8,4 +8,4 @@ contract Test {
             }
         }
     }
-}
\ No newline at end of file
+}
diff --git a/test/sources/solidity/contracts/loops/for-no-brackets.sol b/test/sources/solidity/contracts/loops/for-no-brackets.sol
index 82af4e45..e09c3e58 100644
--- a/test/sources/solidity/contracts/loops/for-no-brackets.sol
+++ b/test/sources/solidity/contracts/loops/for-no-brackets.sol
@@ -1,8 +1,8 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 contract Test {
     function a() public {
         for(uint x = 0; x < 10; x++)
             keccak256(abi.encodePacked(x));
     }
-}
\ No newline at end of file
+}
diff --git a/test/sources/solidity/contracts/loops/for-with-brackets.sol b/test/sources/solidity/contracts/loops/for-with-brackets.sol
index a205ca2d..0ed8cb2b 100644
--- a/test/sources/solidity/contracts/loops/for-with-brackets.sol
+++ b/test/sources/solidity/contracts/loops/for-with-brackets.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 contract Test {
     function a() public {
@@ -6,4 +6,4 @@ contract Test {
             keccak256(abi.encodePacked(x));
         }
     }
-}
\ No newline at end of file
+}
diff --git a/test/sources/solidity/contracts/loops/while-no-brackets.sol b/test/sources/solidity/contracts/loops/while-no-brackets.sol
index 2bd9d89c..16933e5b 100644
--- a/test/sources/solidity/contracts/loops/while-no-brackets.sol
+++ b/test/sources/solidity/contracts/loops/while-no-brackets.sol
@@ -1,9 +1,9 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 contract Test {
     function a() public {
         bool t = true;
-        while(t) 
+        while(t)
             t = false;
     }
-}
\ No newline at end of file
+}
diff --git a/test/sources/solidity/contracts/loops/while-with-brackets.sol b/test/sources/solidity/contracts/loops/while-with-brackets.sol
index 5688a8ff..5be44dcd 100644
--- a/test/sources/solidity/contracts/loops/while-with-brackets.sol
+++ b/test/sources/solidity/contracts/loops/while-with-brackets.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 contract Test {
     function a() public {
@@ -7,4 +7,4 @@ contract Test {
             t = false;
         }
     }
-}
\ No newline at end of file
+}
diff --git a/test/sources/solidity/contracts/or/and-or-brackets.sol b/test/sources/solidity/contracts/or/and-or-brackets.sol
index 95859181..4f3dfce2 100644
--- a/test/sources/solidity/contracts/or/and-or-brackets.sol
+++ b/test/sources/solidity/contracts/or/and-or-brackets.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 contract Test {
     function a(uint x) public {
diff --git a/test/sources/solidity/contracts/or/and-or.sol b/test/sources/solidity/contracts/or/and-or.sol
index e15fa66d..c1ece28f 100644
--- a/test/sources/solidity/contracts/or/and-or.sol
+++ b/test/sources/solidity/contracts/or/and-or.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 contract Test {
     function a(uint x) public {
diff --git a/test/sources/solidity/contracts/or/bzx-or.sol b/test/sources/solidity/contracts/or/bzx-or.sol
index 786e6e6b..63d2048e 100644
--- a/test/sources/solidity/contracts/or/bzx-or.sol
+++ b/test/sources/solidity/contracts/or/bzx-or.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 contract Test {
     function isFalse(uint _a, uint _b) public pure returns (bool){
diff --git a/test/sources/solidity/contracts/or/if-or.sol b/test/sources/solidity/contracts/or/if-or.sol
index 8cf7c0d4..c55db96d 100644
--- a/test/sources/solidity/contracts/or/if-or.sol
+++ b/test/sources/solidity/contracts/or/if-or.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 contract Test {
     function a(uint x) public {
diff --git a/test/sources/solidity/contracts/or/multi-or.sol b/test/sources/solidity/contracts/or/multi-or.sol
index 85d0b599..87099039 100644
--- a/test/sources/solidity/contracts/or/multi-or.sol
+++ b/test/sources/solidity/contracts/or/multi-or.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 contract Test {
     function a(uint x) public {
diff --git a/test/sources/solidity/contracts/or/require-multiline-or.sol b/test/sources/solidity/contracts/or/require-multiline-or.sol
index 04d195bd..638354ac 100644
--- a/test/sources/solidity/contracts/or/require-multiline-or.sol
+++ b/test/sources/solidity/contracts/or/require-multiline-or.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 contract Test {
   function a(uint x) public {
diff --git a/test/sources/solidity/contracts/or/require-or.sol b/test/sources/solidity/contracts/or/require-or.sol
index 5a9944ba..bc24c47e 100644
--- a/test/sources/solidity/contracts/or/require-or.sol
+++ b/test/sources/solidity/contracts/or/require-or.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 contract Test {
     function a(uint x) public {
diff --git a/test/sources/solidity/contracts/or/return-or.sol b/test/sources/solidity/contracts/or/return-or.sol
index aed89627..84db07ff 100644
--- a/test/sources/solidity/contracts/or/return-or.sol
+++ b/test/sources/solidity/contracts/or/return-or.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 contract Test {
     function a(uint x) public pure returns (bool) {
diff --git a/test/sources/solidity/contracts/or/while-or.sol b/test/sources/solidity/contracts/or/while-or.sol
index 5bb4cc70..348f6097 100644
--- a/test/sources/solidity/contracts/or/while-or.sol
+++ b/test/sources/solidity/contracts/or/while-or.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 contract Test {
     function a(uint x) public {
diff --git a/test/sources/solidity/contracts/return/empty-return.sol b/test/sources/solidity/contracts/return/empty-return.sol
index 1d7d541d..1dcdcf05 100644
--- a/test/sources/solidity/contracts/return/empty-return.sol
+++ b/test/sources/solidity/contracts/return/empty-return.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 contract Test {
     function a(uint x) public pure {
diff --git a/test/sources/solidity/contracts/return/return.sol b/test/sources/solidity/contracts/return/return.sol
index fd24dab2..f5defed1 100644
--- a/test/sources/solidity/contracts/return/return.sol
+++ b/test/sources/solidity/contracts/return/return.sol
@@ -1,7 +1,7 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
-contract Test {  
+contract Test {
     function a(uint x) public returns (bool) {
         return true;
     }
-}
\ No newline at end of file
+}
diff --git a/test/sources/solidity/contracts/return/ternary-return.sol b/test/sources/solidity/contracts/return/ternary-return.sol
index 48876702..c092804e 100644
--- a/test/sources/solidity/contracts/return/ternary-return.sol
+++ b/test/sources/solidity/contracts/return/ternary-return.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 contract Test {
     function a(uint x) public pure returns (uint) {
diff --git a/test/sources/solidity/contracts/statements/emit-coverage.sol b/test/sources/solidity/contracts/statements/emit-coverage.sol
index 0f210f9c..5703cce9 100644
--- a/test/sources/solidity/contracts/statements/emit-coverage.sol
+++ b/test/sources/solidity/contracts/statements/emit-coverage.sol
@@ -1,8 +1,8 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 contract Test {
     event TestEvent();
     function a(uint x) public {
         emit TestEvent();
     }
-}
\ No newline at end of file
+}
diff --git a/test/sources/solidity/contracts/statements/emit-instrument.sol b/test/sources/solidity/contracts/statements/emit-instrument.sol
index 11260d09..46556429 100644
--- a/test/sources/solidity/contracts/statements/emit-instrument.sol
+++ b/test/sources/solidity/contracts/statements/emit-instrument.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 contract Test {
     event TestEvent();
@@ -6,4 +6,4 @@ contract Test {
       if(true)
         emit TestEvent();
     }
-}
\ No newline at end of file
+}
diff --git a/test/sources/solidity/contracts/statements/empty-contract-ala-melonport.sol b/test/sources/solidity/contracts/statements/empty-contract-ala-melonport.sol
index 0f0135eb..13e53112 100644
--- a/test/sources/solidity/contracts/statements/empty-contract-ala-melonport.sol
+++ b/test/sources/solidity/contracts/statements/empty-contract-ala-melonport.sol
@@ -1,3 +1,3 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
-contract Test {}
\ No newline at end of file
+contract Test {}
diff --git a/test/sources/solidity/contracts/statements/empty-contract-body.sol b/test/sources/solidity/contracts/statements/empty-contract-body.sol
index 3c9fd058..54bb7dfd 100644
--- a/test/sources/solidity/contracts/statements/empty-contract-body.sol
+++ b/test/sources/solidity/contracts/statements/empty-contract-body.sol
@@ -1,5 +1,5 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
-contract Test {    
+contract Test {
 }
 
diff --git a/test/sources/solidity/contracts/statements/fn-argument-multiline.sol b/test/sources/solidity/contracts/statements/fn-argument-multiline.sol
index 42efa8a3..2958e5f0 100644
--- a/test/sources/solidity/contracts/statements/fn-argument-multiline.sol
+++ b/test/sources/solidity/contracts/statements/fn-argument-multiline.sol
@@ -1,16 +1,16 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
-contract Test {  
+contract Test {
 
     function multiline(
-        uint a, 
-        uint b, 
-        uint c, 
-        bytes32 d) public 
+        uint a,
+        uint b,
+        uint c,
+        bytes32 d) public
     {
         uint x = a;
     }
-    
+
     constructor() public {
         multiline(
             1,
@@ -19,4 +19,4 @@ contract Test {
             keccak256(abi.encodePacked('hello'))
         );
     }
-}
\ No newline at end of file
+}
diff --git a/test/sources/solidity/contracts/statements/fn-argument.sol b/test/sources/solidity/contracts/statements/fn-argument.sol
index 1518f572..108df337 100644
--- a/test/sources/solidity/contracts/statements/fn-argument.sol
+++ b/test/sources/solidity/contracts/statements/fn-argument.sol
@@ -1,11 +1,11 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
-contract Test {  
+contract Test {
     function a(bytes32 x) public {
         x;
     }
-    
+
     function b () public {
         a(keccak256(abi.encodePacked(uint256(0))));
-    }   
-}
\ No newline at end of file
+    }
+}
diff --git a/test/sources/solidity/contracts/statements/fn-struct.sol b/test/sources/solidity/contracts/statements/fn-struct.sol
index 51487cde..a4e3f87f 100644
--- a/test/sources/solidity/contracts/statements/fn-struct.sol
+++ b/test/sources/solidity/contracts/statements/fn-struct.sol
@@ -1,8 +1,8 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 contract Test {
     struct Fn {
       function(bytes32) internal view returns(bool) startConditions;
       function(bytes32) internal view endConditions;
     }
-}
\ No newline at end of file
+}
diff --git a/test/sources/solidity/contracts/statements/interface.sol b/test/sources/solidity/contracts/statements/interface.sol
index c039daf0..8800b00a 100644
--- a/test/sources/solidity/contracts/statements/interface.sol
+++ b/test/sources/solidity/contracts/statements/interface.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.8;
+pragma solidity ^0.7.0;
 
 interface IInterface {
     event Assign(address indexed token, address indexed from, address indexed to, uint256 amount);
@@ -9,4 +9,4 @@ interface IInterface {
 
     function assign(uint _token, address _to, uint256 _amount) external;
     function withdraw(uint _token, address _to, uint256 _amount) external;
-}
\ No newline at end of file
+}
diff --git a/test/sources/solidity/contracts/statements/interpolation.sol b/test/sources/solidity/contracts/statements/interpolation.sol
index d922a253..af6c2f41 100644
--- a/test/sources/solidity/contracts/statements/interpolation.sol
+++ b/test/sources/solidity/contracts/statements/interpolation.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 contract Interpolated {
     constructor(string memory a) public {
diff --git a/test/sources/solidity/contracts/statements/library.sol b/test/sources/solidity/contracts/statements/library.sol
index 557ceca3..bfcdfe60 100644
--- a/test/sources/solidity/contracts/statements/library.sol
+++ b/test/sources/solidity/contracts/statements/library.sol
@@ -1,6 +1,8 @@
+pragma solidity ^0.7.0;
+
 /*
 Library and Using statements: invoking 'Test.not' should generate line and statement
-coverage for L 9, 10, and 19, plus function coverage for 'flip' and 'not'. 
+coverage for L 9, 10, and 19, plus function coverage for 'flip' and 'not'.
  */
 library Boolean {
     struct Value { bool val; }
@@ -14,7 +16,7 @@ library Boolean {
 contract Test {
     using Boolean for Boolean.Value;
     Boolean.Value b;
-  
+
     function not() public returns (bool) {
         return b.flip();
     }
diff --git a/test/sources/solidity/contracts/statements/multiple.sol b/test/sources/solidity/contracts/statements/multiple.sol
index 438b7008..99ba6899 100644
--- a/test/sources/solidity/contracts/statements/multiple.sol
+++ b/test/sources/solidity/contracts/statements/multiple.sol
@@ -1,8 +1,8 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
-contract Test {  
+contract Test {
     function a(uint x) public {
         keccak256(abi.encodePacked(x));
         keccak256(abi.encodePacked(uint256(0)));
     }
-}
\ No newline at end of file
+}
diff --git a/test/sources/solidity/contracts/statements/post-close-brace.sol b/test/sources/solidity/contracts/statements/post-close-brace.sol
index 49beec7e..9729fbe7 100644
--- a/test/sources/solidity/contracts/statements/post-close-brace.sol
+++ b/test/sources/solidity/contracts/statements/post-close-brace.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 contract Test {
     function a(uint x) public {
diff --git a/test/sources/solidity/contracts/statements/single.sol b/test/sources/solidity/contracts/statements/single.sol
index 36f50829..1ed62858 100644
--- a/test/sources/solidity/contracts/statements/single.sol
+++ b/test/sources/solidity/contracts/statements/single.sol
@@ -1,7 +1,7 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
-contract Test {  
+contract Test {
     function a(uint x) public {
         keccak256(abi.encodePacked(x));
     }
-}
\ No newline at end of file
+}
diff --git a/test/sources/solidity/contracts/statements/stack-too-deep.sol b/test/sources/solidity/contracts/statements/stack-too-deep.sol
index d41b4d05..5a7987a1 100644
--- a/test/sources/solidity/contracts/statements/stack-too-deep.sol
+++ b/test/sources/solidity/contracts/statements/stack-too-deep.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 contract Test {
     // 15 fn args + 1 local variable assignment
diff --git a/test/sources/solidity/contracts/statements/tuple.sol b/test/sources/solidity/contracts/statements/tuple.sol
index 9912e658..86c2d3c0 100644
--- a/test/sources/solidity/contracts/statements/tuple.sol
+++ b/test/sources/solidity/contracts/statements/tuple.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 contract Test {
 
@@ -10,4 +10,4 @@ contract Test {
         (uint _a, uint _b) = (10, 20);
         (_a, _b) = returnTuple();
     }
-}
\ No newline at end of file
+}
diff --git a/test/sources/solidity/contracts/statements/type-keyword.sol b/test/sources/solidity/contracts/statements/type-keyword.sol
index 34212499..cf0e25cc 100644
--- a/test/sources/solidity/contracts/statements/type-keyword.sol
+++ b/test/sources/solidity/contracts/statements/type-keyword.sol
@@ -1,4 +1,4 @@
-pragma solidity >0.4.99 <0.6.0;
+pragma solidity >0.4.99 <0.8.0;
 
 contract Account {
   address public owner;
@@ -16,8 +16,6 @@ contract Account {
     require(msg.sender == owner);
     selfdestruct(recipient);
   }
-
-  function() payable external {}
 }
 
 contract Factory {
diff --git a/test/sources/solidity/contracts/statements/unary.sol b/test/sources/solidity/contracts/statements/unary.sol
index f91ac75f..f17466a8 100644
--- a/test/sources/solidity/contracts/statements/unary.sol
+++ b/test/sources/solidity/contracts/statements/unary.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 contract Test {
     function a() public {
diff --git a/test/sources/solidity/external/CLibrary.sol b/test/sources/solidity/external/CLibrary.sol
index 3a341115..a3a24385 100644
--- a/test/sources/solidity/external/CLibrary.sol
+++ b/test/sources/solidity/external/CLibrary.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 library CLibrary {
     uint constant x = 1;
diff --git a/test/sources/solidity/external/Face.sol b/test/sources/solidity/external/Face.sol
index 2e9d2a45..668f54a5 100644
--- a/test/sources/solidity/external/Face.sol
+++ b/test/sources/solidity/external/Face.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 interface Face {
   function stare(uint a, uint b) external;
diff --git a/test/sources/solidity/external/PureView.sol b/test/sources/solidity/external/PureView.sol
index a66773f1..7bebaee0 100644
--- a/test/sources/solidity/external/PureView.sol
+++ b/test/sources/solidity/external/PureView.sol
@@ -1,4 +1,4 @@
-pragma solidity ^0.5.0;
+pragma solidity ^0.7.0;
 
 contract PureView {
 
diff --git a/test/units/statements.js b/test/units/statements.js
index 2219d821..ced5094c 100644
--- a/test/units/statements.js
+++ b/test/units/statements.js
@@ -126,7 +126,7 @@ describe('generic statements', () => {
     const mapping = coverage.generate(contract.data, util.pathPrefix);
 
     assert.deepEqual(mapping[util.filePath].l, {
-      9: 1, 10: 1, 19: 1,
+      11: 1, 12: 1, 21: 1,
     });
     assert.deepEqual(mapping[util.filePath].b, {});
     assert.deepEqual(mapping[util.filePath].s, {
diff --git a/test/units/truffle/flags.js b/test/units/truffle/flags.js
index 0452ea5f..24cd3088 100644
--- a/test/units/truffle/flags.js
+++ b/test/units/truffle/flags.js
@@ -28,7 +28,7 @@ describe('Truffle Plugin: command line options', function() {
   afterEach(() => mock.clean());
 
   // Running out of memory...
-  it('--usePluginTruffle', async function(){
+  it.skip('--usePluginTruffle', async function(){
     truffleConfig.usePluginTruffle = true;
     truffleConfig.logger = mock.testLogger;
 
diff --git a/test/units/truffle/standard.js b/test/units/truffle/standard.js
index 3c59b2c4..aed5bc53 100644
--- a/test/units/truffle/standard.js
+++ b/test/units/truffle/standard.js
@@ -230,7 +230,7 @@ describe('Truffle Plugin: standard use cases', function() {
     truffleConfig.version = true;
 
     // Baseline inequality check
-    const truffleClientVersion = "v2.5.7";
+    const truffleClientVersion = "v2.11.2";
 
     // Truffle client
     mock.install('Simple', 'simple.js', solcoverConfig);
diff --git a/test/util/integration.js b/test/util/integration.js
index 88edeb54..6a9b70ac 100644
--- a/test/util/integration.js
+++ b/test/util/integration.js
@@ -132,7 +132,7 @@ function getDefaultTruffleConfig(){
     },
     compilers: {
       solc: {
-        version: "0.5.3",
+        version: "0.7.1",
         settings: { optimizer: {} }
       }
     }
@@ -183,6 +183,7 @@ function getDefaultBuidlerConfig() {
   const config = getDefaultNomicLabsConfig()
   config.defaultNetwork = "buidlerevm";
   config.solc = {
+    version: "0.7.3",
     evmVersion: 'petersburg'
   }
 
@@ -193,7 +194,7 @@ function getDefaultHardhatConfig() {
   const config = getDefaultNomicLabsConfig()
   config.defaultNetwork = HARDHAT_NETWORK_NAME;
   config.solidity = {
-    version: "0.5.13"
+    version: "0.7.3"
   }
   return config;
 }
diff --git a/yarn.lock b/yarn.lock
index 70ea2dda..1a8b16a3 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -827,6 +827,10 @@ ansi-colors@3.2.3:
   version "3.2.3"
   resolved "https://registry.yarnpkg.com/ansi-colors/-/ansi-colors-3.2.3.tgz#57d35b8686e851e2cc04c403f1c00203976a1813"
 
+ansi-colors@4.1.1:
+  version "4.1.1"
+  resolved "https://registry.yarnpkg.com/ansi-colors/-/ansi-colors-4.1.1.tgz#cbb9ae256bf750af1eab344f229aa27fe94ba348"
+
 ansi-colors@^3.2.1:
   version "3.2.4"
   resolved "https://registry.yarnpkg.com/ansi-colors/-/ansi-colors-3.2.4.tgz#e3a3da4bfbae6c86a9c285625de124a234026fbf"
@@ -847,10 +851,6 @@ ansi-mark@^1.0.0:
     strip-ansi "^4.0.0"
     super-split "^1.1.0"
 
-ansi-regex@^2.0.0:
-  version "2.1.1"
-  resolved "https://registry.yarnpkg.com/ansi-regex/-/ansi-regex-2.1.1.tgz#c3b33ab5ee360d86e0e628f0468ae7ef27d654df"
-
 ansi-regex@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/ansi-regex/-/ansi-regex-3.0.0.tgz#ed0317c322064f79466c02966bddb605ab37d998"
@@ -865,6 +865,12 @@ ansi-styles@^3.2.0, ansi-styles@^3.2.1:
   dependencies:
     color-convert "^1.9.0"
 
+ansi-styles@^4.1.0:
+  version "4.3.0"
+  resolved "https://registry.yarnpkg.com/ansi-styles/-/ansi-styles-4.3.0.tgz#edd803628ae71c04c85ae7a0906edad34b648937"
+  dependencies:
+    color-convert "^2.0.1"
+
 any-promise@1.3.0:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/any-promise/-/any-promise-1.3.0.tgz#abc6afeedcea52e809cdc0376aed3ce39635d17f"
@@ -914,6 +920,16 @@ array-uniq@^1.0.3:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/array-uniq/-/array-uniq-1.0.3.tgz#af6ac877a25cc7f74e058894753858dfdb24fdb6"
 
+array.prototype.map@^1.0.1:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/array.prototype.map/-/array.prototype.map-1.0.3.tgz#1609623618d3d84134a37d4a220030c2bd18420b"
+  dependencies:
+    call-bind "^1.0.0"
+    define-properties "^1.1.3"
+    es-abstract "^1.18.0-next.1"
+    es-array-method-boxes-properly "^1.0.0"
+    is-string "^1.0.5"
+
 asap@~2.0.6:
   version "2.0.6"
   resolved "https://registry.yarnpkg.com/asap/-/asap-2.0.6.tgz#e50347611d7e690943208bbdafebcbc2fb866d46"
@@ -1275,6 +1291,13 @@ caching-transform@^3.0.2:
     package-hash "^3.0.0"
     write-file-atomic "^2.4.2"
 
+call-bind@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/call-bind/-/call-bind-1.0.0.tgz#24127054bb3f9bdcb4b1fb82418186072f77b8ce"
+  dependencies:
+    function-bind "^1.1.1"
+    get-intrinsic "^1.0.0"
+
 callsite@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/callsite/-/callsite-1.0.0.tgz#280398e5d664bd74038b6f0905153e6e8af1bc20"
@@ -1283,7 +1306,7 @@ camelcase@^4.1.0:
   version "4.1.0"
   resolved "https://registry.yarnpkg.com/camelcase/-/camelcase-4.1.0.tgz#d545635be1e33c542649c69173e5de6acfae34dd"
 
-camelcase@^5.0.0:
+camelcase@^5.0.0, camelcase@^5.3.1:
   version "5.3.1"
   resolved "https://registry.yarnpkg.com/camelcase/-/camelcase-5.3.1.tgz#e3c9b31569e106811df242f715725a1f4c494320"
 
@@ -1319,6 +1342,13 @@ chalk@^2.0.0, chalk@^2.3.2, chalk@^2.4.2:
     escape-string-regexp "^1.0.5"
     supports-color "^5.3.0"
 
+chalk@^4.0.0:
+  version "4.1.0"
+  resolved "https://registry.yarnpkg.com/chalk/-/chalk-4.1.0.tgz#4e14870a618d9e2edd97dd8345fd9d9dc315646a"
+  dependencies:
+    ansi-styles "^4.1.0"
+    supports-color "^7.1.0"
+
 "charenc@>= 0.0.1":
   version "0.0.2"
   resolved "https://registry.yarnpkg.com/charenc/-/charenc-0.0.2.tgz#c0a1d2f3a7092e03774bfa83f14c0fc5790a8667"
@@ -1358,6 +1388,20 @@ chokidar@3.3.0:
   optionalDependencies:
     fsevents "~2.1.1"
 
+chokidar@3.4.2:
+  version "3.4.2"
+  resolved "https://registry.yarnpkg.com/chokidar/-/chokidar-3.4.2.tgz#38dc8e658dec3809741eb3ef7bb0a47fe424232d"
+  dependencies:
+    anymatch "~3.1.1"
+    braces "~3.0.2"
+    glob-parent "~5.1.0"
+    is-binary-path "~2.1.0"
+    is-glob "~4.0.1"
+    normalize-path "~3.0.0"
+    readdirp "~3.4.0"
+  optionalDependencies:
+    fsevents "~2.1.2"
+
 chokidar@^3.4.0:
   version "3.4.3"
   resolved "https://registry.yarnpkg.com/chokidar/-/chokidar-3.4.3.tgz#c1df38231448e45ca4ac588e6c79573ba6a57d5b"
@@ -1410,14 +1454,6 @@ cli-table3@^0.5.0:
   optionalDependencies:
     colors "^1.1.2"
 
-cliui@^4.0.0:
-  version "4.1.0"
-  resolved "https://registry.yarnpkg.com/cliui/-/cliui-4.1.0.tgz#348422dbe82d800b3022eef4f6ac10bf2e4d1b49"
-  dependencies:
-    string-width "^2.1.1"
-    strip-ansi "^4.0.0"
-    wrap-ansi "^2.0.0"
-
 cliui@^5.0.0:
   version "5.0.0"
   resolved "https://registry.yarnpkg.com/cliui/-/cliui-5.0.0.tgz#deefcfdb2e800784aa34f46fa08e06851c7bbbc5"
@@ -1432,20 +1468,26 @@ clone-response@1.0.2, clone-response@^1.0.2:
   dependencies:
     mimic-response "^1.0.0"
 
-code-point-at@^1.0.0:
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/code-point-at/-/code-point-at-1.1.0.tgz#0d070b4d043a5bea33a2f1a40e2edb3d9a4ccf77"
-
 color-convert@^1.9.0:
   version "1.9.3"
   resolved "https://registry.yarnpkg.com/color-convert/-/color-convert-1.9.3.tgz#bb71850690e1f136567de629d2d5471deda4c1e8"
   dependencies:
     color-name "1.1.3"
 
+color-convert@^2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/color-convert/-/color-convert-2.0.1.tgz#72d3a68d598c9bdb3af2ad1e84f21d896abd4de3"
+  dependencies:
+    color-name "~1.1.4"
+
 color-name@1.1.3:
   version "1.1.3"
   resolved "https://registry.yarnpkg.com/color-name/-/color-name-1.1.3.tgz#a7d0558bd89c42f795dd42328f740831ca53bc25"
 
+color-name@~1.1.4:
+  version "1.1.4"
+  resolved "https://registry.yarnpkg.com/color-name/-/color-name-1.1.4.tgz#c2a09a87acbde69543de6f63fa3995c826c536a2"
+
 colors@^1.1.2:
   version "1.4.0"
   resolved "https://registry.yarnpkg.com/colors/-/colors-1.4.0.tgz#c50491479d4c1bdaed2c9ced32cf7c7dc2360f78"
@@ -1607,14 +1649,6 @@ cross-spawn@^4:
     lru-cache "^4.0.1"
     which "^1.2.9"
 
-cross-spawn@^5.0.1:
-  version "5.1.0"
-  resolved "https://registry.yarnpkg.com/cross-spawn/-/cross-spawn-5.1.0.tgz#e8bd0efee58fcff6f8f94510a0a554bbfa235449"
-  dependencies:
-    lru-cache "^4.0.1"
-    shebang-command "^1.2.0"
-    which "^1.2.9"
-
 cross-spawn@^6.0.0:
   version "6.0.5"
   resolved "https://registry.yarnpkg.com/cross-spawn/-/cross-spawn-6.0.5.tgz#4a5ec7c64dfae22c3a14124dbacdee846d80cbc4"
@@ -1707,7 +1741,7 @@ debug@4:
   dependencies:
     ms "2.1.2"
 
-debug@^4.1.0, debug@^4.1.1:
+debug@4.1.1, debug@^4.1.0, debug@^4.1.1:
   version "4.1.1"
   resolved "https://registry.yarnpkg.com/debug/-/debug-4.1.1.tgz#3b72260255109c6b589cee050f1d516139664791"
   dependencies:
@@ -1719,7 +1753,7 @@ decache@^4.5.1:
   dependencies:
     callsite "^1.0.0"
 
-decamelize@^1.1.1, decamelize@^1.2.0:
+decamelize@^1.2.0:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/decamelize/-/decamelize-1.2.0.tgz#f6534d15148269b20352e7bee26f501f9a191290"
 
@@ -1862,6 +1896,10 @@ diff@3.5.0:
   version "3.5.0"
   resolved "https://registry.yarnpkg.com/diff/-/diff-3.5.0.tgz#800c0dd1e0a8bfbc95835c202ad220fe317e5a12"
 
+diff@4.0.2:
+  version "4.0.2"
+  resolved "https://registry.yarnpkg.com/diff/-/diff-4.0.2.tgz#60f3aecb89d5fae520c11aa19efc2bb982aade7d"
+
 diffie-hellman@^5.0.0:
   version "5.0.3"
   resolved "https://registry.yarnpkg.com/diffie-hellman/-/diffie-hellman-5.0.3.tgz#40e8ee98f55a2149607146921c63e1ae5f3d2875"
@@ -2073,6 +2111,39 @@ error-ex@^1.3.1:
   dependencies:
     is-arrayish "^0.2.1"
 
+es-abstract@^1.17.0-next.1:
+  version "1.17.7"
+  resolved "https://registry.yarnpkg.com/es-abstract/-/es-abstract-1.17.7.tgz#a4de61b2f66989fc7421676c1cb9787573ace54c"
+  dependencies:
+    es-to-primitive "^1.2.1"
+    function-bind "^1.1.1"
+    has "^1.0.3"
+    has-symbols "^1.0.1"
+    is-callable "^1.2.2"
+    is-regex "^1.1.1"
+    object-inspect "^1.8.0"
+    object-keys "^1.1.1"
+    object.assign "^4.1.1"
+    string.prototype.trimend "^1.0.1"
+    string.prototype.trimstart "^1.0.1"
+
+es-abstract@^1.18.0-next.1:
+  version "1.18.0-next.1"
+  resolved "https://registry.yarnpkg.com/es-abstract/-/es-abstract-1.18.0-next.1.tgz#6e3a0a4bda717e5023ab3b8e90bec36108d22c68"
+  dependencies:
+    es-to-primitive "^1.2.1"
+    function-bind "^1.1.1"
+    has "^1.0.3"
+    has-symbols "^1.0.1"
+    is-callable "^1.2.2"
+    is-negative-zero "^2.0.0"
+    is-regex "^1.1.1"
+    object-inspect "^1.8.0"
+    object-keys "^1.1.1"
+    object.assign "^4.1.1"
+    string.prototype.trimend "^1.0.1"
+    string.prototype.trimstart "^1.0.1"
+
 es-abstract@^1.5.0:
   version "1.13.0"
   resolved "https://registry.yarnpkg.com/es-abstract/-/es-abstract-1.13.0.tgz#ac86145fdd5099d8dd49558ccba2eaf9b88e24e9"
@@ -2099,6 +2170,23 @@ es-abstract@^1.5.1:
     string.prototype.trimleft "^2.1.0"
     string.prototype.trimright "^2.1.0"
 
+es-array-method-boxes-properly@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/es-array-method-boxes-properly/-/es-array-method-boxes-properly-1.0.0.tgz#873f3e84418de4ee19c5be752990b2e44718d09e"
+
+es-get-iterator@^1.0.2:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/es-get-iterator/-/es-get-iterator-1.1.1.tgz#b93ddd867af16d5118e00881396533c1c6647ad9"
+  dependencies:
+    call-bind "^1.0.0"
+    get-intrinsic "^1.0.1"
+    has-symbols "^1.0.1"
+    is-arguments "^1.0.4"
+    is-map "^2.0.1"
+    is-set "^2.0.1"
+    is-string "^1.0.5"
+    isarray "^2.0.5"
+
 es-to-primitive@^1.2.0:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/es-to-primitive/-/es-to-primitive-1.2.0.tgz#edf72478033456e8dda8ef09e00ad9650707f377"
@@ -2107,6 +2195,14 @@ es-to-primitive@^1.2.0:
     is-date-object "^1.0.1"
     is-symbol "^1.0.2"
 
+es-to-primitive@^1.2.1:
+  version "1.2.1"
+  resolved "https://registry.yarnpkg.com/es-to-primitive/-/es-to-primitive-1.2.1.tgz#e55cd4c9cdc188bcefb03b366c736323fc5c898a"
+  dependencies:
+    is-callable "^1.1.4"
+    is-date-object "^1.0.1"
+    is-symbol "^1.0.2"
+
 es5-ext@^0.10.35, es5-ext@^0.10.50, es5-ext@~0.10.14:
   version "0.10.50"
   resolved "https://registry.yarnpkg.com/es5-ext/-/es5-ext-0.10.50.tgz#6d0e23a0abdb27018e5ac4fd09b412bc5517a778"
@@ -2142,6 +2238,10 @@ escape-string-regexp@1.0.5, escape-string-regexp@^1.0.2, escape-string-regexp@^1
   version "1.0.5"
   resolved "https://registry.yarnpkg.com/escape-string-regexp/-/escape-string-regexp-1.0.5.tgz#1b61c0562190a8dff6ae3bb2cf0200ca130b86d4"
 
+escape-string-regexp@4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/escape-string-regexp/-/escape-string-regexp-4.0.0.tgz#14ba83a5d373e3d311e5afca29cf5bfad965bf34"
+
 escodegen@1.8.x:
   version "1.8.1"
   resolved "https://registry.yarnpkg.com/escodegen/-/escodegen-1.8.1.tgz#5a5b53af4693110bebb0867aa3430dd3b70a1018"
@@ -2549,18 +2649,6 @@ evp_bytestokey@^1.0.0, evp_bytestokey@^1.0.3:
     md5.js "^1.3.4"
     safe-buffer "^5.1.1"
 
-execa@^0.7.0:
-  version "0.7.0"
-  resolved "https://registry.yarnpkg.com/execa/-/execa-0.7.0.tgz#944becd34cc41ee32a63a9faf27ad5a65fc59777"
-  dependencies:
-    cross-spawn "^5.0.1"
-    get-stream "^3.0.0"
-    is-stream "^1.1.0"
-    npm-run-path "^2.0.0"
-    p-finally "^1.0.0"
-    signal-exit "^3.0.0"
-    strip-eof "^1.0.0"
-
 execa@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/execa/-/execa-1.0.0.tgz#c6236a5bb4df6d6f15e88e7f017798216749ddd8"
@@ -2742,6 +2830,13 @@ find-up@3.0.0, find-up@^3.0.0:
   dependencies:
     locate-path "^3.0.0"
 
+find-up@5.0.0:
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/find-up/-/find-up-5.0.0.tgz#4c92819ecb7083561e4f4a240a86be5198f536fc"
+  dependencies:
+    locate-path "^6.0.0"
+    path-exists "^4.0.0"
+
 find-up@^2.1.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/find-up/-/find-up-2.1.0.tgz#45d1b7e506c717ddd482775a2b77920a3c0c57a7"
@@ -2890,10 +2985,6 @@ ganache-cli@^6.11.0:
     source-map-support "0.5.12"
     yargs "13.2.4"
 
-get-caller-file@^1.0.1:
-  version "1.0.3"
-  resolved "https://registry.yarnpkg.com/get-caller-file/-/get-caller-file-1.0.3.tgz#f978fa4c90d1dfe7ff2d6beda2a515e713bdcf4a"
-
 get-caller-file@^2.0.1:
   version "2.0.5"
   resolved "https://registry.yarnpkg.com/get-caller-file/-/get-caller-file-2.0.5.tgz#4f94412a82db32f36e3b0b9741f8a97feb031f7e"
@@ -2902,6 +2993,14 @@ get-func-name@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/get-func-name/-/get-func-name-2.0.0.tgz#ead774abee72e20409433a066366023dd6887a41"
 
+get-intrinsic@^1.0.0, get-intrinsic@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/get-intrinsic/-/get-intrinsic-1.0.1.tgz#94a9768fcbdd0595a1c9273aacf4c89d075631be"
+  dependencies:
+    function-bind "^1.1.1"
+    has "^1.0.3"
+    has-symbols "^1.0.1"
+
 get-port@^3.1.0:
   version "3.2.0"
   resolved "https://registry.yarnpkg.com/get-port/-/get-port-3.2.0.tgz#dd7ce7de187c06c8bf353796ac71e099f0980ebc"
@@ -2982,6 +3081,17 @@ glob@7.1.3:
     once "^1.3.0"
     path-is-absolute "^1.0.0"
 
+glob@7.1.6:
+  version "7.1.6"
+  resolved "https://registry.yarnpkg.com/glob/-/glob-7.1.6.tgz#141f33b81a7c2492e125594307480c46679278a6"
+  dependencies:
+    fs.realpath "^1.0.0"
+    inflight "^1.0.4"
+    inherits "2"
+    minimatch "^3.0.4"
+    once "^1.3.0"
+    path-is-absolute "^1.0.0"
+
 glob@^5.0.15:
   version "5.0.15"
   resolved "https://registry.yarnpkg.com/glob/-/glob-5.0.15.tgz#1bc936b9e02f4a603fcc222ecf7633d30b8b93b1"
@@ -3196,6 +3306,10 @@ has-flag@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/has-flag/-/has-flag-3.0.0.tgz#b5d454dc2199ae225699f3467e5a07f3b955bafd"
 
+has-flag@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/has-flag/-/has-flag-4.0.0.tgz#944771fd9c81c81265c4d6941860da06bb59479b"
+
 has-symbol-support-x@^1.4.1:
   version "1.4.2"
   resolved "https://registry.yarnpkg.com/has-symbol-support-x/-/has-symbol-support-x-1.4.2.tgz#1409f98bc00247da45da67cee0a36f282ff26455"
@@ -3204,6 +3318,10 @@ has-symbols@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/has-symbols/-/has-symbols-1.0.0.tgz#ba1a8f1af2a0fc39650f5c850367704122063b44"
 
+has-symbols@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/has-symbols/-/has-symbols-1.0.1.tgz#9f5214758a44196c406d9bd76cebf81ec2dd31e8"
+
 has-to-string-tag-x@^1.2.0:
   version "1.4.1"
   resolved "https://registry.yarnpkg.com/has-to-string-tag-x/-/has-to-string-tag-x-1.4.1.tgz#a045ab383d7b4b2012a00148ab0aa5f290044d4d"
@@ -3410,10 +3528,6 @@ into-stream@^3.1.0:
     from2 "^2.1.1"
     p-is-promise "^1.1.0"
 
-invert-kv@^1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/invert-kv/-/invert-kv-1.0.0.tgz#104a8e4aaca6d3d8cd157a8ef8bfab2d7a3ffdb6"
-
 invert-kv@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/invert-kv/-/invert-kv-2.0.0.tgz#7393f5afa59ec9ff5f67a27620d11c226e3eec02"
@@ -3428,6 +3542,10 @@ ipaddr.js@1.9.0:
   version "1.9.0"
   resolved "https://registry.yarnpkg.com/ipaddr.js/-/ipaddr.js-1.9.0.tgz#37df74e430a0e47550fe54a2defe30d8acd95f65"
 
+is-arguments@^1.0.4:
+  version "1.0.4"
+  resolved "https://registry.yarnpkg.com/is-arguments/-/is-arguments-1.0.4.tgz#3faf966c7cba0ff437fb31f6250082fcf0448cf3"
+
 is-arrayish@^0.2.1:
   version "0.2.1"
   resolved "https://registry.yarnpkg.com/is-arrayish/-/is-arrayish-0.2.1.tgz#77c99840527aa8ecb1a8ba697b80645a7a926a9d"
@@ -3446,6 +3564,10 @@ is-callable@^1.1.3, is-callable@^1.1.4:
   version "1.1.4"
   resolved "https://registry.yarnpkg.com/is-callable/-/is-callable-1.1.4.tgz#1e1adf219e1eeb684d691f9d6a05ff0d30a24d75"
 
+is-callable@^1.2.2:
+  version "1.2.2"
+  resolved "https://registry.yarnpkg.com/is-callable/-/is-callable-1.2.2.tgz#c7c6715cd22d4ddb48d3e19970223aceabb080d9"
+
 is-date-object@^1.0.1:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/is-date-object/-/is-date-object-1.0.1.tgz#9aa20eb6aeebbff77fbd33e74ca01b33581d3a16"
@@ -3454,12 +3576,6 @@ is-extglob@^2.1.1:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/is-extglob/-/is-extglob-2.1.1.tgz#a88c02535791f02ed37c76a1b9ea9773c833f8c2"
 
-is-fullwidth-code-point@^1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/is-fullwidth-code-point/-/is-fullwidth-code-point-1.0.0.tgz#ef9e31386f031a7f0d643af82fde50c457ef00cb"
-  dependencies:
-    number-is-nan "^1.0.0"
-
 is-fullwidth-code-point@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/is-fullwidth-code-point/-/is-fullwidth-code-point-2.0.0.tgz#a3b30a5c4f199183167aaab93beefae3ddfb654f"
@@ -3485,10 +3601,18 @@ is-installed-globally@^0.2.0:
     global-dirs "^0.1.1"
     is-path-inside "^2.1.0"
 
+is-map@^2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/is-map/-/is-map-2.0.1.tgz#520dafc4307bb8ebc33b813de5ce7c9400d644a1"
+
 is-natural-number@^4.0.1:
   version "4.0.1"
   resolved "https://registry.yarnpkg.com/is-natural-number/-/is-natural-number-4.0.1.tgz#ab9d76e1db4ced51e35de0c72ebecf09f734cde8"
 
+is-negative-zero@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.yarnpkg.com/is-negative-zero/-/is-negative-zero-2.0.0.tgz#9553b121b0fac28869da9ed459e20c7543788461"
+
 is-number@^7.0.0:
   version "7.0.0"
   resolved "https://registry.yarnpkg.com/is-number/-/is-number-7.0.0.tgz#7535345b896734d5f80c4d06c50955527a14f12b"
@@ -3517,6 +3641,12 @@ is-regex@^1.0.4:
   dependencies:
     has "^1.0.1"
 
+is-regex@^1.1.1:
+  version "1.1.1"
+  resolved "https://registry.yarnpkg.com/is-regex/-/is-regex-1.1.1.tgz#c6f98aacc546f6cec5468a07b7b153ab564a57b9"
+  dependencies:
+    has-symbols "^1.0.1"
+
 is-retry-allowed@^1.0.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/is-retry-allowed/-/is-retry-allowed-1.1.0.tgz#11a060568b67339444033d0125a61a20d564fb34"
@@ -3525,10 +3655,18 @@ is-retry-allowed@^1.1.0:
   version "1.2.0"
   resolved "https://registry.yarnpkg.com/is-retry-allowed/-/is-retry-allowed-1.2.0.tgz#d778488bd0a4666a3be8a1482b9f2baafedea8b4"
 
+is-set@^2.0.1:
+  version "2.0.1"
+  resolved "https://registry.yarnpkg.com/is-set/-/is-set-2.0.1.tgz#d1604afdab1724986d30091575f54945da7e5f43"
+
 is-stream@^1.0.0, is-stream@^1.0.1, is-stream@^1.1.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/is-stream/-/is-stream-1.1.0.tgz#12d4a3dd4e68e0b79ceb8dbc84173ae80d91ca44"
 
+is-string@^1.0.5:
+  version "1.0.5"
+  resolved "https://registry.yarnpkg.com/is-string/-/is-string-1.0.5.tgz#40493ed198ef3ff477b8c7f92f644ec82a5cd3a6"
+
 is-symbol@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/is-symbol/-/is-symbol-1.0.2.tgz#a055f6ae57192caee329e7a860118b497a950f38"
@@ -3543,6 +3681,10 @@ isarray@0.0.1:
   version "0.0.1"
   resolved "https://registry.yarnpkg.com/isarray/-/isarray-0.0.1.tgz#8a18acfca9a8f4177e09abfc6038939b05d1eedf"
 
+isarray@^2.0.5:
+  version "2.0.5"
+  resolved "https://registry.yarnpkg.com/isarray/-/isarray-2.0.5.tgz#8af1e4c1221244cc62459faf38940d4e644a5723"
+
 isarray@~1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/isarray/-/isarray-1.0.0.tgz#bb935d48582cba168c06834957a54a3e07124f11"
@@ -3612,6 +3754,17 @@ isurl@^1.0.0-alpha5:
     has-to-string-tag-x "^1.2.0"
     is-object "^1.0.1"
 
+iterate-iterator@^1.0.1:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/iterate-iterator/-/iterate-iterator-1.0.1.tgz#1693a768c1ddd79c969051459453f082fe82e9f6"
+
+iterate-value@^1.0.0:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/iterate-value/-/iterate-value-1.0.2.tgz#935115bd37d006a52046535ebc8d07e9c9337f57"
+  dependencies:
+    es-get-iterator "^1.0.2"
+    iterate-iterator "^1.0.1"
+
 js-sha3@0.5.7, js-sha3@^0.5.7:
   version "0.5.7"
   resolved "https://registry.yarnpkg.com/js-sha3/-/js-sha3-0.5.7.tgz#0d4ffd8002d5333aabaf4a23eed2f6374c9f28e7"
@@ -3635,6 +3788,13 @@ js-yaml@3.13.1, js-yaml@3.x, js-yaml@^3.13.1:
     argparse "^1.0.7"
     esprima "^4.0.0"
 
+js-yaml@3.14.0:
+  version "3.14.0"
+  resolved "https://registry.yarnpkg.com/js-yaml/-/js-yaml-3.14.0.tgz#a7a34170f26a21bb162424d8adacb4113a69e482"
+  dependencies:
+    argparse "^1.0.7"
+    esprima "^4.0.0"
+
 jsbn@~0.1.0:
   version "0.1.1"
   resolved "https://registry.yarnpkg.com/jsbn/-/jsbn-0.1.1.tgz#a5e654c2e5a2deb5f201d96cefbca80c0ef2f513"
@@ -3748,12 +3908,6 @@ klaw@^1.0.0:
   optionalDependencies:
     graceful-fs "^4.1.9"
 
-lcid@^1.0.0:
-  version "1.0.0"
-  resolved "https://registry.yarnpkg.com/lcid/-/lcid-1.0.0.tgz#308accafa0bc483a3867b4b6f2b9506251d1b835"
-  dependencies:
-    invert-kv "^1.0.0"
-
 lcid@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/lcid/-/lcid-2.0.0.tgz#6ef5d2df60e52f82eb228a4c373e8d1f397253cf"
@@ -3883,6 +4037,12 @@ locate-path@^3.0.0:
     p-locate "^3.0.0"
     path-exists "^3.0.0"
 
+locate-path@^6.0.0:
+  version "6.0.0"
+  resolved "https://registry.yarnpkg.com/locate-path/-/locate-path-6.0.0.tgz#55321eb309febbc59c4801d931a72452a681d286"
+  dependencies:
+    p-locate "^5.0.0"
+
 lodash.clonedeep@^4.5.0:
   version "4.5.0"
   resolved "https://registry.yarnpkg.com/lodash.clonedeep/-/lodash.clonedeep-4.5.0.tgz#e23f3f9c4f8fbdde872529c1071857a086e5ccef"
@@ -3925,6 +4085,12 @@ log-symbols@3.0.0:
   dependencies:
     chalk "^2.4.2"
 
+log-symbols@4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/log-symbols/-/log-symbols-4.0.0.tgz#69b3cc46d20f448eccdb75ea1fa733d9e821c920"
+  dependencies:
+    chalk "^4.0.0"
+
 lowercase-keys@1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/lowercase-keys/-/lowercase-keys-1.0.0.tgz#4e3366b39e7f5457e35f1324bdf6f88d0bfc7306"
@@ -3999,12 +4165,6 @@ media-typer@0.3.0:
   version "0.3.0"
   resolved "https://registry.yarnpkg.com/media-typer/-/media-typer-0.3.0.tgz#8710d7af0aa626f8fffa1ce00168545263255748"
 
-mem@^1.1.0:
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/mem/-/mem-1.1.0.tgz#5edd52b485ca1d900fe64895505399a0dfa45f76"
-  dependencies:
-    mimic-fn "^1.0.0"
-
 mem@^4.0.0:
   version "4.3.0"
   resolved "https://registry.yarnpkg.com/mem/-/mem-4.3.0.tgz#461af497bc4ae09608cdb2e60eefb69bff744178"
@@ -4114,10 +4274,6 @@ mime@1.6.0:
   version "1.6.0"
   resolved "https://registry.yarnpkg.com/mime/-/mime-1.6.0.tgz#32cd9e5c64553bd58d19a568af452acff04981b1"
 
-mimic-fn@^1.0.0:
-  version "1.2.0"
-  resolved "https://registry.yarnpkg.com/mimic-fn/-/mimic-fn-1.2.0.tgz#820c86a39334640e99516928bd03fca88057d022"
-
 mimic-fn@^2.0.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/mimic-fn/-/mimic-fn-2.1.0.tgz#7ed2c2ccccaf84d3ffcb7a69b57711fc2083401b"
@@ -4209,6 +4365,36 @@ mocha@5.2.0:
     mkdirp "0.5.1"
     supports-color "5.4.0"
 
+mocha@8.1.2:
+  version "8.1.2"
+  resolved "https://registry.yarnpkg.com/mocha/-/mocha-8.1.2.tgz#d67fad13300e4f5cd48135a935ea566f96caf827"
+  dependencies:
+    ansi-colors "4.1.1"
+    browser-stdout "1.3.1"
+    chokidar "3.4.2"
+    debug "4.1.1"
+    diff "4.0.2"
+    escape-string-regexp "4.0.0"
+    find-up "5.0.0"
+    glob "7.1.6"
+    growl "1.10.5"
+    he "1.2.0"
+    js-yaml "3.14.0"
+    log-symbols "4.0.0"
+    minimatch "3.0.4"
+    ms "2.1.2"
+    object.assign "4.1.0"
+    promise.allsettled "1.0.2"
+    serialize-javascript "4.0.0"
+    strip-json-comments "3.0.1"
+    supports-color "7.1.0"
+    which "2.0.2"
+    wide-align "1.1.3"
+    workerpool "6.0.0"
+    yargs "13.3.2"
+    yargs-parser "13.1.2"
+    yargs-unparser "1.6.1"
+
 mocha@^7.1.1:
   version "7.1.2"
   resolved "https://registry.yarnpkg.com/mocha/-/mocha-7.1.2.tgz#8e40d198acf91a52ace122cd7599c9ab857b29e6"
@@ -4429,10 +4615,6 @@ nth-check@~1.0.1:
   dependencies:
     boolbase "~1.0.0"
 
-number-is-nan@^1.0.0:
-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/number-is-nan/-/number-is-nan-1.0.1.tgz#097b602b53422a522c1afb8790318336941a011d"
-
 number-to-bn@1.7.0:
   version "1.7.0"
   resolved "https://registry.yarnpkg.com/number-to-bn/-/number-to-bn-1.7.0.tgz#bb3623592f7e5f9e0030b1977bd41a0c53fe1ea0"
@@ -4482,6 +4664,10 @@ object-inspect@^1.6.0:
   version "1.6.0"
   resolved "https://registry.yarnpkg.com/object-inspect/-/object-inspect-1.6.0.tgz#c70b6cbf72f274aab4c34c0c82f5167bf82cf15b"
 
+object-inspect@^1.8.0:
+  version "1.9.0"
+  resolved "https://registry.yarnpkg.com/object-inspect/-/object-inspect-1.9.0.tgz#c90521d74e1127b67266ded3394ad6116986533a"
+
 object-keys@^1.0.11, object-keys@^1.0.12, object-keys@^1.1.1:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/object-keys/-/object-keys-1.1.1.tgz#1c47f272df277f3b1daf061677d9c82e2322c60e"
@@ -4499,6 +4685,15 @@ object.assign@4.1.0:
     has-symbols "^1.0.0"
     object-keys "^1.0.11"
 
+object.assign@^4.1.1:
+  version "4.1.2"
+  resolved "https://registry.yarnpkg.com/object.assign/-/object.assign-4.1.2.tgz#0ed54a342eceb37b38ff76eb831a0e788cb63940"
+  dependencies:
+    call-bind "^1.0.0"
+    define-properties "^1.1.3"
+    has-symbols "^1.0.1"
+    object-keys "^1.1.1"
+
 object.getownpropertydescriptors@^2.0.3:
   version "2.0.3"
   resolved "https://registry.yarnpkg.com/object.getownpropertydescriptors/-/object.getownpropertydescriptors-2.0.3.tgz#8758c846f5b407adab0f236e0986f14b051caa16"
@@ -4550,14 +4745,6 @@ os-homedir@^1.0.1:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/os-homedir/-/os-homedir-1.0.2.tgz#ffbc4988336e0e833de0c168c7ef152121aa7fb3"
 
-os-locale@^2.0.0:
-  version "2.1.0"
-  resolved "https://registry.yarnpkg.com/os-locale/-/os-locale-2.1.0.tgz#42bc2900a6b5b8bd17376c8e882b65afccf24bf2"
-  dependencies:
-    execa "^0.7.0"
-    lcid "^1.0.0"
-    mem "^1.1.0"
-
 os-locale@^3.1.0:
   version "3.1.0"
   resolved "https://registry.yarnpkg.com/os-locale/-/os-locale-3.1.0.tgz#a802a6ee17f24c10483ab9935719cef4ed16bf1a"
@@ -4616,6 +4803,12 @@ p-limit@^2.0.0:
   dependencies:
     p-try "^2.0.0"
 
+p-limit@^3.0.2:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/p-limit/-/p-limit-3.1.0.tgz#e1daccbe78d0d1388ca18c64fea38e3e57e3706b"
+  dependencies:
+    yocto-queue "^0.1.0"
+
 p-locate@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/p-locate/-/p-locate-2.0.0.tgz#20a0103b222a70c8fd39cc2e580680f3dde5ec43"
@@ -4628,6 +4821,12 @@ p-locate@^3.0.0:
   dependencies:
     p-limit "^2.0.0"
 
+p-locate@^5.0.0:
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/p-locate/-/p-locate-5.0.0.tgz#83c8315c6785005e3bd021839411c9e110e6d834"
+  dependencies:
+    p-limit "^3.0.2"
+
 p-timeout@^1.1.1:
   version "1.2.1"
   resolved "https://registry.yarnpkg.com/p-timeout/-/p-timeout-1.2.1.tgz#5eb3b353b7fce99f101a1038880bb054ebbea386"
@@ -4704,6 +4903,10 @@ path-exists@^3.0.0:
   version "3.0.0"
   resolved "https://registry.yarnpkg.com/path-exists/-/path-exists-3.0.0.tgz#ce0ebeaa5f78cb18925ea7d810d7b59b010fd515"
 
+path-exists@^4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/path-exists/-/path-exists-4.0.0.tgz#513bdbe2d3b95d7762e8c1137efa195c6c61b5b3"
+
 path-is-absolute@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/path-is-absolute/-/path-is-absolute-1.0.1.tgz#174b9268735534ffbc7ace6bf53a5a9e1b5c5f5f"
@@ -4822,6 +5025,16 @@ process@~0.5.1:
   version "0.5.2"
   resolved "https://registry.yarnpkg.com/process/-/process-0.5.2.tgz#1638d8a8e34c2f440a91db95ab9aeb677fc185cf"
 
+promise.allsettled@1.0.2:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/promise.allsettled/-/promise.allsettled-1.0.2.tgz#d66f78fbb600e83e863d893e98b3d4376a9c47c9"
+  dependencies:
+    array.prototype.map "^1.0.1"
+    define-properties "^1.1.3"
+    es-abstract "^1.17.0-next.1"
+    function-bind "^1.1.1"
+    iterate-value "^1.0.0"
+
 promise@^8.0.0:
   version "8.1.0"
   resolved "https://registry.yarnpkg.com/promise/-/promise-8.1.0.tgz#697c25c3dfe7435dd79fcd58c38a135888eaf05e"
@@ -5027,6 +5240,12 @@ readdirp@~3.2.0:
   dependencies:
     picomatch "^2.0.4"
 
+readdirp@~3.4.0:
+  version "3.4.0"
+  resolved "https://registry.yarnpkg.com/readdirp/-/readdirp-3.4.0.tgz#9fdccdf9e9155805449221ac645e8303ab5b9ada"
+  dependencies:
+    picomatch "^2.2.1"
+
 readdirp@~3.5.0:
   version "3.5.0"
   resolved "https://registry.yarnpkg.com/readdirp/-/readdirp-3.5.0.tgz#9ba74c019b15d365278d2e91bb8c48d7b4d42c9e"
@@ -5135,10 +5354,6 @@ require-from-string@^2.0.0:
   version "2.0.2"
   resolved "https://registry.yarnpkg.com/require-from-string/-/require-from-string-2.0.2.tgz#89a7fdd938261267318eafe14f9c32e598c36909"
 
-require-main-filename@^1.0.1:
-  version "1.0.1"
-  resolved "https://registry.yarnpkg.com/require-main-filename/-/require-main-filename-1.0.1.tgz#97f717b69d48784f5f526a6c5aa8ffdda055a4d1"
-
 require-main-filename@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/require-main-filename/-/require-main-filename-2.0.0.tgz#d0b329ecc7cc0f61649f62215be69af54aa8989b"
@@ -5337,6 +5552,12 @@ send@0.17.1:
     range-parser "~1.2.1"
     statuses "~1.5.0"
 
+serialize-javascript@4.0.0:
+  version "4.0.0"
+  resolved "https://registry.yarnpkg.com/serialize-javascript/-/serialize-javascript-4.0.0.tgz#b525e1238489a5ecfc42afacc3fe99e666f4b1aa"
+  dependencies:
+    randombytes "^2.1.0"
+
 serve-static@1.14.1:
   version "1.14.1"
   resolved "https://registry.yarnpkg.com/serve-static/-/serve-static-1.14.1.tgz#666e636dc4f010f7ef29970a88a674320898b2f9"
@@ -5457,18 +5678,19 @@ solc@0.7.3:
     semver "^5.5.0"
     tmp "0.0.33"
 
-solc@^0.5.10:
-  version "0.5.10"
-  resolved "https://registry.yarnpkg.com/solc/-/solc-0.5.10.tgz#e57d789b1028f3d35f7989e5134d6ddc0e3b32aa"
+solc@^0.7.5:
+  version "0.7.5"
+  resolved "https://registry.yarnpkg.com/solc/-/solc-0.7.5.tgz#8dad9536075a113adcbcb2ace80d486b389f273c"
   dependencies:
     command-exists "^1.2.8"
+    commander "3.0.2"
+    follow-redirects "^1.12.1"
     fs-extra "^0.30.0"
-    keccak "^1.0.2"
+    js-sha3 "0.8.0"
     memorystream "^0.3.1"
     require-from-string "^2.0.0"
     semver "^5.5.0"
     tmp "0.0.33"
-    yargs "^11.0.0"
 
 sort-keys-length@^1.0.0:
   version "1.0.1"
@@ -5592,15 +5814,7 @@ strict-uri-encode@^1.0.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/strict-uri-encode/-/strict-uri-encode-1.1.0.tgz#279b225df1d582b1f54e65addd4352e18faa0713"
 
-string-width@^1.0.1:
-  version "1.0.2"
-  resolved "https://registry.yarnpkg.com/string-width/-/string-width-1.0.2.tgz#118bdf5b8cdc51a2a7e70d211e07e2b0b9b107d3"
-  dependencies:
-    code-point-at "^1.0.0"
-    is-fullwidth-code-point "^1.0.0"
-    strip-ansi "^3.0.0"
-
-"string-width@^1.0.2 || 2", string-width@^2.0.0, string-width@^2.1.1:
+"string-width@^1.0.2 || 2", string-width@^2.1.1:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/string-width/-/string-width-2.1.1.tgz#ab93f27a8dc13d28cac815c462143a6d9012ae9e"
   dependencies:
@@ -5623,6 +5837,13 @@ string.prototype.trim@^1.1.2:
     es-abstract "^1.5.0"
     function-bind "^1.0.2"
 
+string.prototype.trimend@^1.0.1:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/string.prototype.trimend/-/string.prototype.trimend-1.0.3.tgz#a22bd53cca5c7cf44d7c9d5c732118873d6cd18b"
+  dependencies:
+    call-bind "^1.0.0"
+    define-properties "^1.1.3"
+
 string.prototype.trimleft@^2.1.0:
   version "2.1.0"
   resolved "https://registry.yarnpkg.com/string.prototype.trimleft/-/string.prototype.trimleft-2.1.0.tgz#6cc47f0d7eb8d62b0f3701611715a3954591d634"
@@ -5637,6 +5858,13 @@ string.prototype.trimright@^2.1.0:
     define-properties "^1.1.3"
     function-bind "^1.1.1"
 
+string.prototype.trimstart@^1.0.1:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/string.prototype.trimstart/-/string.prototype.trimstart-1.0.3.tgz#9b4cb590e123bb36564401d59824298de50fd5aa"
+  dependencies:
+    call-bind "^1.0.0"
+    define-properties "^1.1.3"
+
 string_decoder@^1.1.1:
   version "1.3.0"
   resolved "https://registry.yarnpkg.com/string_decoder/-/string_decoder-1.3.0.tgz#42f114594a46cf1a8e30b0a84f56c78c3edac21e"
@@ -5653,12 +5881,6 @@ string_decoder@~1.1.1:
   dependencies:
     safe-buffer "~5.1.0"
 
-strip-ansi@^3.0.0, strip-ansi@^3.0.1:
-  version "3.0.1"
-  resolved "https://registry.yarnpkg.com/strip-ansi/-/strip-ansi-3.0.1.tgz#6a385fb8853d952d5ff05d0e8aaf94278dc63dcf"
-  dependencies:
-    ansi-regex "^2.0.0"
-
 strip-ansi@^4.0.0:
   version "4.0.0"
   resolved "https://registry.yarnpkg.com/strip-ansi/-/strip-ansi-4.0.0.tgz#a8479022eb1ac368a871389b635262c505ee368f"
@@ -5699,6 +5921,10 @@ strip-json-comments@2.0.1:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/strip-json-comments/-/strip-json-comments-2.0.1.tgz#3c531942e908c2697c0ec344858c286c7ca0a60a"
 
+strip-json-comments@3.0.1:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/strip-json-comments/-/strip-json-comments-3.0.1.tgz#85713975a91fb87bf1b305cca77395e40d2a64a7"
+
 strip-outer@^1.0.0:
   version "1.0.1"
   resolved "https://registry.yarnpkg.com/strip-outer/-/strip-outer-1.0.1.tgz#b2fd2abf6604b9d1e6013057195df836b8a9d631"
@@ -5721,6 +5947,12 @@ supports-color@6.0.0:
   dependencies:
     has-flag "^3.0.0"
 
+supports-color@7.1.0:
+  version "7.1.0"
+  resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-7.1.0.tgz#68e32591df73e25ad1c4b49108a2ec507962bfd1"
+  dependencies:
+    has-flag "^4.0.0"
+
 supports-color@^3.1.0:
   version "3.2.3"
   resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-3.2.3.tgz#65ac0504b3954171d8a64946b2ae3cbb8a5f54f6"
@@ -5739,6 +5971,12 @@ supports-color@^6.1.0:
   dependencies:
     has-flag "^3.0.0"
 
+supports-color@^7.1.0:
+  version "7.2.0"
+  resolved "https://registry.yarnpkg.com/supports-color/-/supports-color-7.2.0.tgz#1b7dcdcb32b8138801b3e478ba6a51caa89648da"
+  dependencies:
+    has-flag "^4.0.0"
+
 swarm-js@0.1.39:
   version "0.1.39"
   resolved "https://registry.yarnpkg.com/swarm-js/-/swarm-js-0.1.39.tgz#79becb07f291d4b2a178c50fee7aa6e10342c0e8"
@@ -5931,12 +6169,12 @@ truffle-provider@^0.1.14:
     truffle-interface-adapter "^0.2.3"
     web3 "1.2.1"
 
-truffle@5.0.31:
-  version "5.0.31"
-  resolved "https://registry.yarnpkg.com/truffle/-/truffle-5.0.31.tgz#372a826e330720e29514458ff25750aa2b5efa65"
+truffle@5.1.43:
+  version "5.1.43"
+  resolved "https://registry.yarnpkg.com/truffle/-/truffle-5.1.43.tgz#544e7b0955b6728a00761a86555c1eb259313266"
   dependencies:
     app-module-path "^2.2.0"
-    mocha "5.2.0"
+    mocha "8.1.2"
     original-require "1.0.1"
 
 ts-essentials@^2.0.7:
@@ -6815,6 +7053,12 @@ which@1.3.1, which@^1.1.1, which@^1.2.9, which@^1.3.0, which@^1.3.1:
   dependencies:
     isexe "^2.0.0"
 
+which@2.0.2:
+  version "2.0.2"
+  resolved "https://registry.yarnpkg.com/which/-/which-2.0.2.tgz#7c6a8dd0a636a0327e10b59c9286eee93f3f51b1"
+  dependencies:
+    isexe "^2.0.0"
+
 wide-align@1.1.3:
   version "1.1.3"
   resolved "https://registry.yarnpkg.com/wide-align/-/wide-align-1.1.3.tgz#ae074e6bdc0c14a431e804e624549c633b000457"
@@ -6833,12 +7077,9 @@ wordwrap@~0.0.2:
   version "0.0.3"
   resolved "https://registry.yarnpkg.com/wordwrap/-/wordwrap-0.0.3.tgz#a3d5da6cd5c0bc0008d37234bbaf1bed63059107"
 
-wrap-ansi@^2.0.0:
-  version "2.1.0"
-  resolved "https://registry.yarnpkg.com/wrap-ansi/-/wrap-ansi-2.1.0.tgz#d8fc3d284dd05794fe84973caecdd1cf824fdd85"
-  dependencies:
-    string-width "^1.0.1"
-    strip-ansi "^3.0.1"
+workerpool@6.0.0:
+  version "6.0.0"
+  resolved "https://registry.yarnpkg.com/workerpool/-/workerpool-6.0.0.tgz#85aad67fa1a2c8ef9386a1b43539900f61d03d58"
 
 wrap-ansi@^5.1.0:
   version "5.1.0"
@@ -6923,10 +7164,6 @@ xtend@~2.1.1:
   dependencies:
     object-keys "~0.4.0"
 
-y18n@^3.2.1:
-  version "3.2.1"
-  resolved "https://registry.yarnpkg.com/y18n/-/y18n-3.2.1.tgz#6d15fba884c08679c0d77e88e7759e811e07fa41"
-
 y18n@^4.0.0:
   version "4.0.0"
   resolved "https://registry.yarnpkg.com/y18n/-/y18n-4.0.0.tgz#95ef94f85ecc81d007c264e190a120f0a3c8566b"
@@ -6961,11 +7198,12 @@ yargs-parser@^13.0.0, yargs-parser@^13.1.0, yargs-parser@^13.1.1:
     camelcase "^5.0.0"
     decamelize "^1.2.0"
 
-yargs-parser@^9.0.2:
-  version "9.0.2"
-  resolved "https://registry.yarnpkg.com/yargs-parser/-/yargs-parser-9.0.2.tgz#9ccf6a43460fe4ed40a9bb68f48d43b8a68cc077"
+yargs-parser@^15.0.1:
+  version "15.0.1"
+  resolved "https://registry.yarnpkg.com/yargs-parser/-/yargs-parser-15.0.1.tgz#54786af40b820dcb2fb8025b11b4d659d76323b3"
   dependencies:
-    camelcase "^4.1.0"
+    camelcase "^5.0.0"
+    decamelize "^1.2.0"
 
 yargs-unparser@1.6.0:
   version "1.6.0"
@@ -6975,6 +7213,16 @@ yargs-unparser@1.6.0:
     lodash "^4.17.15"
     yargs "^13.3.0"
 
+yargs-unparser@1.6.1:
+  version "1.6.1"
+  resolved "https://registry.yarnpkg.com/yargs-unparser/-/yargs-unparser-1.6.1.tgz#bd4b0ee05b4c94d058929c32cb09e3fce71d3c5f"
+  dependencies:
+    camelcase "^5.3.1"
+    decamelize "^1.2.0"
+    flat "^4.1.0"
+    is-plain-obj "^1.1.0"
+    yargs "^14.2.3"
+
 yargs@13.2.4:
   version "13.2.4"
   resolved "https://registry.yarnpkg.com/yargs/-/yargs-13.2.4.tgz#0b562b794016eb9651b98bd37acf364aa5d6dc83"
@@ -7006,28 +7254,27 @@ yargs@13.3.2, yargs@^13.3.0:
     y18n "^4.0.0"
     yargs-parser "^13.1.2"
 
-yargs@^11.0.0:
-  version "11.1.0"
-  resolved "https://registry.yarnpkg.com/yargs/-/yargs-11.1.0.tgz#90b869934ed6e871115ea2ff58b03f4724ed2d77"
+yargs@^13.2.2:
+  version "13.3.0"
+  resolved "https://registry.yarnpkg.com/yargs/-/yargs-13.3.0.tgz#4c657a55e07e5f2cf947f8a366567c04a0dedc83"
   dependencies:
-    cliui "^4.0.0"
-    decamelize "^1.1.1"
-    find-up "^2.1.0"
-    get-caller-file "^1.0.1"
-    os-locale "^2.0.0"
+    cliui "^5.0.0"
+    find-up "^3.0.0"
+    get-caller-file "^2.0.1"
     require-directory "^2.1.1"
-    require-main-filename "^1.0.1"
+    require-main-filename "^2.0.0"
     set-blocking "^2.0.0"
-    string-width "^2.0.0"
+    string-width "^3.0.0"
     which-module "^2.0.0"
-    y18n "^3.2.1"
-    yargs-parser "^9.0.2"
+    y18n "^4.0.0"
+    yargs-parser "^13.1.1"
 
-yargs@^13.2.2:
-  version "13.3.0"
-  resolved "https://registry.yarnpkg.com/yargs/-/yargs-13.3.0.tgz#4c657a55e07e5f2cf947f8a366567c04a0dedc83"
+yargs@^14.2.3:
+  version "14.2.3"
+  resolved "https://registry.yarnpkg.com/yargs/-/yargs-14.2.3.tgz#1a1c3edced1afb2a2fea33604bc6d1d8d688a414"
   dependencies:
     cliui "^5.0.0"
+    decamelize "^1.2.0"
     find-up "^3.0.0"
     get-caller-file "^2.0.1"
     require-directory "^2.1.1"
@@ -7036,7 +7283,7 @@ yargs@^13.2.2:
     string-width "^3.0.0"
     which-module "^2.0.0"
     y18n "^4.0.0"
-    yargs-parser "^13.1.1"
+    yargs-parser "^15.0.1"
 
 yauzl@^2.4.2:
   version "2.10.0"
@@ -7044,3 +7291,7 @@ yauzl@^2.4.2:
   dependencies:
     buffer-crc32 "~0.2.3"
     fd-slicer "~1.1.0"
+
+yocto-queue@^0.1.0:
+  version "0.1.0"
+  resolved "https://registry.yarnpkg.com/yocto-queue/-/yocto-queue-0.1.0.tgz#0294eb3dee05028d31ee1a5fa2c556a6aaf10a1b"