diff --git a/pkgs/by-name/co/cosmic-protocols/package.nix b/pkgs/by-name/co/cosmic-protocols/package.nix
index 7a8a6b2bc405..177d299c7550 100644
--- a/pkgs/by-name/co/cosmic-protocols/package.nix
+++ b/pkgs/by-name/co/cosmic-protocols/package.nix
@@ -19,6 +19,7 @@ stdenv.mkDerivation {
   };
 
   __structuredAttrs = true;
+  strictDeps = true;
 
   makeFlags = [ "PREFIX=${placeholder "out"}" ];
   nativeBuildInputs = [ wayland-scanner ];