diff --git a/.github/workflows/jupyterbook.yml b/.github/workflows/jupyterbook.yml
index 890d4f8..3e5d51b 100644
--- a/.github/workflows/jupyterbook.yml
+++ b/.github/workflows/jupyterbook.yml
@@ -48,4 +48,4 @@ jobs:
       uses: rossjrw/pr-preview-action@v1
       with:
         source-dir: ./tutorial/docs/_build/html
-    #  if: github.event_name == 'pull_request'
+      if: github.event_name == 'pull_request'