diff --git a/pkgs/by-name/op/opencomposite/package.nix b/pkgs/by-name/op/opencomposite/package.nix
index 661b0025359af..5e74363d0773a 100644
--- a/pkgs/by-name/op/opencomposite/package.nix
+++ b/pkgs/by-name/op/opencomposite/package.nix
@@ -26,13 +26,15 @@ stdenv.mkDerivation {
     hash = "sha256-SV8E+4qu5J7MueHmdsdTDKNx4CH085fidgIJyewj8RQ=";
   };
 
-  nativeBuildInputs = [ cmake ];
+  nativeBuildInputs = [
+    cmake
+    python3
+  ];
 
   buildInputs = [
     glm
     jsoncpp
     libGL
-    python3
     vulkan-headers
     vulkan-loader
     xorg.libX11