diff --git a/Cargo.lock b/Cargo.lock
index 7189b1a254d698f82a1d3861d82b7a17f8800f07..af101a83ce1b5d9d3e86b16ee92a9fb7a66642c3 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -554,7 +554,7 @@ dependencies = [
  "parity-wasm 0.42.1",
  "pretty_assertions",
  "pwasm-utils",
- "rustc_version 0.3.2",
+ "rustc_version 0.3.3",
  "semver 0.11.0",
  "serde",
  "serde_json",
@@ -3180,9 +3180,9 @@ dependencies = [
 
 [[package]]
 name = "rustc_version"
-version = "0.3.2"
+version = "0.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "397d411cfc34097bdb176984180f7d9980eb161aaf1368ceea96c9834d8f8b85"
+checksum = "f0dfe2087c51c460008730de8b57e6a320782fbfb312e1f4d520e6c6fae155ee"
 dependencies = [
  "semver 0.11.0",
 ]
diff --git a/Cargo.toml b/Cargo.toml
index d58978b9a1f4633045c373ab2a1a6a2cf89e9cbd..3075c322235f2514b8ea4a227db8fef8ea0bd21b 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -32,7 +32,7 @@ codec = { package = "parity-scale-codec", version = "1.3.5" }
 which = "4.0.2"
 colored = "2.0.0"
 toml = "0.5.8"
-rustc_version = "0.3.2"
+rustc_version = "0.3.3"
 blake2 = "0.9.1"
 contract-metadata = { version = "0.2.0", path = "./metadata" }
 semver = { version = "0.11.0", features = ["serde"] }