diff --git a/Cargo.lock b/Cargo.lock
index 24ff9f7..944d419 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1128,7 +1128,7 @@ dependencies = [
 
 [[package]]
 name = "ic-websocket-cdk"
-version = "0.3.4"
+version = "0.4.0"
 dependencies = [
  "base64 0.22.1",
  "candid",
diff --git a/src/ic-websocket-cdk/Cargo.toml b/src/ic-websocket-cdk/Cargo.toml
index 5046146..6f12dff 100644
--- a/src/ic-websocket-cdk/Cargo.toml
+++ b/src/ic-websocket-cdk/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "ic-websocket-cdk"
-version = "0.3.4"
+version = "0.4.0"
 edition.workspace = true
 rust-version.workspace = true
 repository.workspace = true