diff --git a/overlay.nix b/overlay.nix
index 9ababc1..19f0cfe 100644
--- a/overlay.nix
+++ b/overlay.nix
@@ -29,14 +29,14 @@ final: prev: {
     ocaml-manual = ofinal.callPackage ./pkgs/ocaml/ocaml-manual {};
   });
 
-  python3Packages = prev.python3Packages.overrideScope (pfinal: pprev: {
+  python312Packages = prev.python312Packages.overrideScope (pfinal: pprev: {
     feedvalidator = pfinal.callPackage ./pkgs/python/feedvalidator {};
     megacom = pfinal.callPackage ./pkgs/python/megacom {};
   });
 
   # add to top level because it has a binary
-  feedvalidator = final.python3Packages.feedvalidator;
-  megacom = final.python3Packages.megacom;
+  feedvalidator = final.python312Packages.feedvalidator;
+  megacom = final.python312Packages.megacom;
 
   outer-wilds-text-adventure = prev.callPackage ./pkgs/games/outer-wilds-text-adventure {};