diff --git a/flake.nix b/flake.nix
index 10a2150..5cd8c1b 100644
--- a/flake.nix
+++ b/flake.nix
@@ -13,7 +13,7 @@
       pkgs = import nixpkgs {
         inherit system;
       };
-      py = pkgs.python3.override {
+      py = pkgs.python311.override {
         packageOverrides = final: prev: {
           django = prev.django_4;
           cronsim =