diff --git a/Cargo.lock b/Cargo.lock
index df28be4b434cc737562ddb289397d056c60276b4..c5de86e02738891ceb01f04107d6f8c13f54a915 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -345,9 +345,9 @@ dependencies = [
 
 [[package]]
 name = "blake2"
-version = "0.10.1"
+version = "0.10.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "456792aca5c9ce59bb1e02d4d02fed75ae146ccc13bfe4c3b306bb3305f0be63"
+checksum = "b94ba84325db59637ffc528bbe8c7f86c02c57cff5c0e2b9b00f9a851f42f309"
 dependencies = [
  "digest 0.10.1",
 ]
diff --git a/Cargo.toml b/Cargo.toml
index 1b1d0e012289eadf249251264ec700c758774dcf..fcde54934a84bfe0e53b8378dc34698092529ab5 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -33,7 +33,7 @@ which = "4.2.2"
 colored = "2.0.0"
 toml = "0.5.8"
 rustc_version = "0.4.0"
-blake2 = "0.10.1"
+blake2 = "0.10.2"
 contract-metadata = { version = "0.5.0", path = "./metadata" }
 semver = { version = "1.0.4", features = ["serde"] }
 serde = { version = "1.0.133", default-features = false, features = ["derive"] }