diff --git a/Cargo.lock b/Cargo.lock
index 9c8fa8fd8bbea16b3ac0f4f66fa83ee8772417f8..b426cd8ff48e155098ab4f8105d9dd110ec49183 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1327,9 +1327,9 @@ dependencies = [
 
 [[package]]
 name = "heck"
-version = "0.3.2"
+version = "0.3.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "87cbf45460356b7deeb5e3415b5563308c0a9b057c85e12b06ad551f98d0a6ac"
+checksum = "6d621efb26863f0e9924c6ac577e8275e5e6b77455db64ffa6c65c904e9e132c"
 dependencies = [
  "unicode-segmentation",
 ]
diff --git a/Cargo.toml b/Cargo.toml
index 55bd830c471804756e65a5b94c33b69f5f314c56..845414e6697fed23cf7c490bb24e18f905f81faa 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -23,7 +23,7 @@ env_logger = "0.8.3"
 anyhow = "1.0.40"
 structopt = "0.3.21"
 log = "0.4.14"
-heck = "0.3.2"
+heck = "0.3.3"
 zip = { version = "0.5.12", default-features = false }
 pwasm-utils = "0.18.0"
 parity-wasm = "0.42.2"