diff --git a/pkgs/by-name/go/google-cloud-sdk/package.nix b/pkgs/by-name/go/google-cloud-sdk/package.nix
index 8c2f1e1aa696..5ee15fe2d29e 100644
--- a/pkgs/by-name/go/google-cloud-sdk/package.nix
+++ b/pkgs/by-name/go/google-cloud-sdk/package.nix
@@ -89,7 +89,7 @@ stdenv.mkDerivation rec {
   ];
 
   # Prevent Python from writing bytecode to ensure build determinism
-  PYTHONDONTWRITEBYTECODE = "1";
+  env.PYTHONDONTWRITEBYTECODE = "1";
 
   installPhase = ''
     runHook preInstall