diff --git a/.travis.yml b/.travis.yml
index 7789109..12eb8e7 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,27 @@
 language: node_js
+os: linux
+dist: xenial
 node_js:
-  - "8"
-  - "10"
+  - "14"
+  - "13"
   - "12"
+  - "11"
+  - "10"
+  - "9"
+  - "8"
+  - "6"
+  - "4"
+  - "iojs"
+  - "0.12"
+  - "0.10"
+  - "0.8"
+before_install:
+  # Old npm certs are untrusted https://github.com/npm/npm/issues/20191
+  - 'if [ "${TRAVIS_NODE_VERSION}" = "0.8" ]; then export NPM_CONFIG_STRICT_SSL=false; fi'
+  - 'nvm install-latest-npm'
+install:
+  - 'if [ "${TRAVIS_NODE_VERSION}" = "0.9" ]; then nvm install --latest-npm 0.8 && npm install && nvm use "${TRAVIS_NODE_VERSION}"; else npm install; fi;'
+matrix:
+  fast_finish: true
+  allow_failures:
+    - node_js: "0.6"
diff --git a/package-lock.json b/package-lock.json
index 6eb9a75..d09ce06 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -5,47 +5,46 @@
   "requires": true,
   "dependencies": {
     "commander": {
-      "version": "2.0.0",
-      "resolved": "https://registry.npmjs.org/commander/-/commander-2.0.0.tgz",
-      "integrity": "sha1-0bhvkB+LZL2UG96tr5JFMDk76Sg=",
+      "version": "2.3.0",
+      "resolved": "https://registry.npmjs.org/commander/-/commander-2.3.0.tgz",
+      "integrity": "sha1-/UMOiJgy7DU7ms0d4hfBHLPu+HM=",
       "dev": true
     },
     "debug": {
-      "version": "4.1.1",
-      "resolved": "https://registry.npmjs.org/debug/-/debug-4.1.1.tgz",
-      "integrity": "sha512-pYAIzeRo8J6KPEaJ0VWOh5Pzkbw/RetuzehGM7QRRX5he4fPHx2rdKMB256ehJCkX+XRQm16eZLqLNS8RSZXZw==",
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/debug/-/debug-2.2.0.tgz",
+      "integrity": "sha1-+HBX6ZWxofauaklgZkE3vFbwOdo=",
       "dev": true,
       "requires": {
-        "ms": "^2.1.1"
+        "ms": "0.7.1"
       }
     },
     "diff": {
-      "version": "1.0.7",
-      "resolved": "https://registry.npmjs.org/diff/-/diff-1.0.7.tgz",
-      "integrity": "sha1-JLuwAcSn1VIhaefKvbLCgU7ZHPQ=",
+      "version": "1.4.0",
+      "resolved": "https://registry.npmjs.org/diff/-/diff-1.4.0.tgz",
+      "integrity": "sha1-fyjS657nsVqX79ic5j3P2qPMur8=",
+      "dev": true
+    },
+    "escape-string-regexp": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/escape-string-regexp/-/escape-string-regexp-1.0.2.tgz",
+      "integrity": "sha1-Tbwv5nTnGUnK8/smlc5/LcHZqNE=",
       "dev": true
     },
     "glob": {
-      "version": "3.2.3",
-      "resolved": "https://registry.npmjs.org/glob/-/glob-3.2.3.tgz",
-      "integrity": "sha1-4xPusknHr/qlxHUoaw4RW1mDlGc=",
+      "version": "3.2.11",
+      "resolved": "https://registry.npmjs.org/glob/-/glob-3.2.11.tgz",
+      "integrity": "sha1-Spc/Y1uRkPcV0QmH1cAP0oFevj0=",
       "dev": true,
       "requires": {
-        "graceful-fs": "~2.0.0",
         "inherits": "2",
-        "minimatch": "~0.2.11"
+        "minimatch": "0.3"
       }
     },
-    "graceful-fs": {
-      "version": "2.0.3",
-      "resolved": "https://registry.npmjs.org/graceful-fs/-/graceful-fs-2.0.3.tgz",
-      "integrity": "sha1-fNLNsiiko/Nule+mzBQt59GhNtA=",
-      "dev": true
-    },
     "growl": {
-      "version": "1.7.0",
-      "resolved": "https://registry.npmjs.org/growl/-/growl-1.7.0.tgz",
-      "integrity": "sha1-3i1mE20ALhErpw8/EMMc98NQsto=",
+      "version": "1.9.2",
+      "resolved": "https://registry.npmjs.org/growl/-/growl-1.9.2.tgz",
+      "integrity": "sha1-Dqd0NxXbjY3ixe3hd14bRayFwC8=",
       "dev": true
     },
     "inherits": {
@@ -85,40 +84,52 @@
       "dev": true
     },
     "minimatch": {
-      "version": "0.2.14",
-      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-0.2.14.tgz",
-      "integrity": "sha1-x054BXT2PG+aCQ6Q775u9TpqdWo=",
+      "version": "0.3.0",
+      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-0.3.0.tgz",
+      "integrity": "sha1-J12O2qxPG7MyZHIInnlJyDlGmd0=",
       "dev": true,
       "requires": {
         "lru-cache": "2",
         "sigmund": "~1.0.0"
       }
     },
-    "mkdirp": {
-      "version": "0.3.5",
-      "resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-0.3.5.tgz",
-      "integrity": "sha1-3j5fiWHIjHh+4TaN+EmsRBPsqNc=",
+    "minimist": {
+      "version": "0.0.8",
+      "resolved": "https://registry.npmjs.org/minimist/-/minimist-0.0.8.tgz",
+      "integrity": "sha1-hX/Kv8M5fSYluCKCYuhqp6ARsF0=",
       "dev": true
     },
+    "mkdirp": {
+      "version": "0.5.1",
+      "resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-0.5.1.tgz",
+      "integrity": "sha1-MAV0OOrGz3+MR2fzhkjWaX11yQM=",
+      "dev": true,
+      "requires": {
+        "minimist": "0.0.8"
+      }
+    },
     "mocha": {
-      "version": "1.14.0",
-      "resolved": "https://registry.npmjs.org/mocha/-/mocha-1.14.0.tgz",
-      "integrity": "sha1-cT223FAAGRqdA1gZXQkIeQ7LYVc=",
+      "version": "2.5.3",
+      "resolved": "https://registry.npmjs.org/mocha/-/mocha-2.5.3.tgz",
+      "integrity": "sha1-FhvlvetJZ3HrmzV0UFC2IrWu/Fg=",
       "dev": true,
       "requires": {
-        "commander": "2.0.0",
-        "debug": "*",
-        "diff": "1.0.7",
-        "glob": "3.2.3",
-        "growl": "1.7.x",
+        "commander": "2.3.0",
+        "debug": "2.2.0",
+        "diff": "1.4.0",
+        "escape-string-regexp": "1.0.2",
+        "glob": "3.2.11",
+        "growl": "1.9.2",
         "jade": "0.26.3",
-        "mkdirp": "0.3.5"
+        "mkdirp": "0.5.1",
+        "supports-color": "1.2.0",
+        "to-iso-string": "0.0.2"
       }
     },
     "ms": {
-      "version": "2.1.2",
-      "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.2.tgz",
-      "integrity": "sha512-sGkPx+VjMtmA6MX27oA4FBFELFCZZ4S4XqeGOXCv68tT+jb3vk/RyaKWP0PTKyWtmLSM0b+adUTEvbs1PEaH2w==",
+      "version": "0.7.1",
+      "resolved": "https://registry.npmjs.org/ms/-/ms-0.7.1.tgz",
+      "integrity": "sha1-nNE8A62/8ltl7/3nzoZO6VIBcJg=",
       "dev": true
     },
     "resolve": {
@@ -131,6 +142,18 @@
       "resolved": "https://registry.npmjs.org/sigmund/-/sigmund-1.0.1.tgz",
       "integrity": "sha1-P/IfGYytIXX587eBhT/ZTQ0ZtZA=",
       "dev": true
+    },
+    "supports-color": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-1.2.0.tgz",
+      "integrity": "sha1-/x7R5hFp0Gs88tWI4YixjYhH4X4=",
+      "dev": true
+    },
+    "to-iso-string": {
+      "version": "0.0.2",
+      "resolved": "https://registry.npmjs.org/to-iso-string/-/to-iso-string-0.0.2.tgz",
+      "integrity": "sha1-TcGeZk38y+Jb2NtQiwDG2hWCVdE=",
+      "dev": true
     }
   }
 }
diff --git a/package.json b/package.json
index da13328..fd7db63 100644
--- a/package.json
+++ b/package.json
@@ -24,6 +24,6 @@
     "resolve": "1.1.7"
   },
   "devDependencies": {
-    "mocha": "1.14.0"
+    "mocha": "^2.5.3"
   }
 }