diff --git a/flake.nix b/flake.nix
index 5253bd8..7c34079 100644
--- a/flake.nix
+++ b/flake.nix
@@ -282,7 +282,7 @@
           postInstall =
             ''
             # conflicts with linien-client
-            rm -rf $out/lib/python3.11/site-packages/linien/__pycache__
+            rm -rf $out/lib/python3.12/site-packages/linien/__pycache__
             '';
         };
         # replace broken (as usual) setuptools launcher