diff --git a/src/ic-cdk-optimizer/Cargo.toml b/src/ic-cdk-optimizer/Cargo.toml
index ce913725d..2145ea0f3 100644
--- a/src/ic-cdk-optimizer/Cargo.toml
+++ b/src/ic-cdk-optimizer/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "ic-cdk-optimizer"
-version = "0.3.0"
+version = "0.3.1"
 authors = ["DFINITY Stiftung <sdk@dfinity.org>"]
 edition = "2018"
 description = "WASM Optimizer for the IC CDK (experimental)."
@@ -16,7 +16,8 @@ include = ["src", "Cargo.toml", "LICENSE", "README.md"]
 
 [dependencies]
 binaryen = "0.12.0"
-clap = "3.0.0-beta.1"
+clap = "=3.0.0-beta.2"
+clap_derive = "=3.0.0-beta.2"
 humansize = "1.1.0"
 tempfile = "3.1.0"
 wabt = "0.10.0"