diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index e3e6f6a5660c..ada043f08949 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -2543,7 +2543,7 @@ with pkgs;
 
   punes-qt6 = qt6Packages.callPackage ../applications/emulators/punes { };
 
-  py65 = python3Packages.callPackage ../applications/emulators/py65 { };
+  py65 = with python3.pkgs; toPythonApplication py65;
 
   resim = callPackage ../applications/emulators/resim { };