diff --git a/Cargo.lock b/Cargo.lock
index a8385aa..1c96b1d 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -211,7 +211,18 @@ version = "0.1.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "1374191e2dd25f9ae02e3aa95041ed5d747fc77b3c102b49fe2dd9a8117a6244"
 dependencies = [
- "num-bigint",
+ "num-bigint 0.2.6",
+ "num-integer",
+ "num-traits",
+]
+
+[[package]]
+name = "bigdecimal"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6aaf33151a6429fe9211d1b276eafdf70cdff28b071e76c0b0e1503221ea3744"
+dependencies = [
+ "num-bigint 0.4.2",
  "num-integer",
  "num-traits",
  "serde",
@@ -884,12 +895,12 @@ version = "1.4.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b28135ecf6b7d446b43e27e225622a038cc4e2930a1022f51cdb97ada19b8e4d"
 dependencies = [
- "bigdecimal",
+ "bigdecimal 0.1.2",
  "bitflags 1.3.1",
  "byteorder",
  "chrono",
  "diesel_derives",
- "num-bigint",
+ "num-bigint 0.2.6",
  "num-integer",
  "num-traits",
  "pq-sys",
@@ -1499,7 +1510,7 @@ dependencies = [
  "anyhow",
  "async-trait",
  "atomic_refcell",
- "bigdecimal",
+ "bigdecimal 0.3.0",
  "bytes 1.0.1",
  "chrono",
  "diesel",
@@ -1516,7 +1527,7 @@ dependencies = [
  "lazy_static",
  "maplit",
  "mockall 0.8.3",
- "num-bigint",
+ "num-bigint 0.2.6",
  "num-traits",
  "num_cpus",
  "parking_lot 0.11.2",
@@ -2803,6 +2814,17 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "num-bigint"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "74e768dff5fb39a41b3bcd30bb25cf989706c90d028d1ad71971987aa309d535"
+dependencies = [
+ "autocfg 1.0.1",
+ "num-integer",
+ "num-traits",
+]
+
 [[package]]
 name = "num-integer"
 version = "0.1.44"
diff --git a/graph/Cargo.toml b/graph/Cargo.toml
index 37c1d14..102d76d 100644
--- a/graph/Cargo.toml
+++ b/graph/Cargo.toml
@@ -7,7 +7,7 @@ edition = "2018"
 anyhow = "1.0"
 async-trait = "0.1.50"
 atomic_refcell = "0.1.8"
-bigdecimal = { version = "0.1.0", features = ["serde"] }
+bigdecimal = { version = "0.3.0", features = ["serde"] }
 bytes = "1.0.1"
 diesel = { version = "1.4.8", features = ["postgres", "serde_json", "numeric", "r2d2", "chrono"] }
 diesel_derives = "1.4"