diff --git a/pkgs/by-name/pi/pixel-code/package.nix b/pkgs/by-name/pi/pixel-code/package.nix
index f569e9424405..14b95041f5c6 100644
--- a/pkgs/by-name/pi/pixel-code/package.nix
+++ b/pkgs/by-name/pi/pixel-code/package.nix
@@ -23,6 +23,8 @@ stdenvNoCC.mkDerivation (finalAttrs: {
     hash = "sha256-jpOj6MndjCTTPESIjh3VJW1FKK5n99W8GBgPqloaKFM=";
   };
 
+  strictDeps = true;
+
   nativeBuildInputs = [
     (python3.withPackages (
       ps: with ps; [