diff --git a/.forgejo/workflows/demo.yaml b/.forgejo/workflows/demo.yaml
index 6bb9341..935846f 100644
--- a/.forgejo/workflows/demo.yaml
+++ b/.forgejo/workflows/demo.yaml
@@ -10,4 +10,4 @@ jobs:
       - run: git clone --depth=1 https://$FORGEJO_TOKEN@forge.cbaines.net/cbaines/guile-knots.git --branch=pages knots-pages
       - run: |
           cd knots-trunk
-          guix shell -f guix-dev.scm -- documenta api knots
+          guix shell -D -f guix-dev.scm -- documenta api knots