diff --git a/.forgejo/workflows/demo.yaml b/.forgejo/workflows/demo.yaml
index 432c9a2..0dcc5d1 100644
--- a/.forgejo/workflows/demo.yaml
+++ b/.forgejo/workflows/demo.yaml
@@ -3,5 +3,5 @@ jobs:
   test:
     runs-on: nixos-latest
     steps:
-      - run: nix develop
+      - run: nix --extra-experimental-features nix-command develop
       - run: just test