diff --git a/flake.nix b/flake.nix
index 6eceaa2..6dc8534 100644
--- a/flake.nix
+++ b/flake.nix
@@ -18,7 +18,8 @@
       in
       rec {
         packages = rec {
-          python = pkgs.python315.overrideAttrs (
+          # also works on 3.15 but there are no packages easily available for that.
+          python = pkgs.python314.overrideAttrs (
             finalAttrs: previousAttrs: {
               patches = previousAttrs.patches ++ [
                 ./0001-add-to-parser.patch