diff --git a/.forgejo/workflows/demo.yaml b/.forgejo/workflows/demo.yaml
index 7624c9c..e6144e2 100644
--- a/.forgejo/workflows/demo.yaml
+++ b/.forgejo/workflows/demo.yaml
@@ -14,3 +14,5 @@ jobs:
         with:
           nix_path: nixpkgs=channel:nixos-unstable
       - run: nix develop
+
+        -run: just build