diff --git a/pkgs/by-name/pr/protoc-gen-prost-serde/package.nix b/pkgs/by-name/pr/protoc-gen-prost-serde/package.nix
index fc417d085b25..8fc07650c316 100644
--- a/pkgs/by-name/pr/protoc-gen-prost-serde/package.nix
+++ b/pkgs/by-name/pr/protoc-gen-prost-serde/package.nix
@@ -7,14 +7,14 @@
 
 rustPlatform.buildRustPackage rec {
   pname = "protoc-gen-prost-serde";
-  version = "0.3.1";
+  version = "0.4.0";
 
   src = fetchCrate {
     inherit pname version;
-    hash = "sha256-RQlNVGa6BRIqIGodqNN3eGl//hkUWrq7GpTGpRBCDgE=";
+    hash = "sha256-tgsGyUVoQZQcOqh56KGVwS3VcxwbKzBL3P2VpYs72Ok=";
   };
 
-  cargoHash = "sha256-OWSXA3S3o5eqM3pg2MPxx3HrCma778YJaPFOJq7S5zY=";
+  cargoHash = "sha256-otsovgqCC+IdxbdGBaPfjK61bZsHtWwY0QqZBPQxnvw=";
 
   passthru.updateScript = nix-update-script { };