diff --git a/.forgejo/workflows/demo.yml b/.forgejo/workflows/demo.yml
index e8a0892..41b4534 100644
--- a/.forgejo/workflows/demo.yml
+++ b/.forgejo/workflows/demo.yml
@@ -1,8 +1,9 @@
 ---
 on: push
 jobs:
-  ipv6:
     runs-on: docker
+    image: nixos/nix:2.24.9
     steps:
       - run: |
+          ls -alh
           echo "All set !"