diff --git a/.github/workflows/notebooks.yml b/.github/workflows/notebooks.yml
index 6af3556..7c65213 100644
--- a/.github/workflows/notebooks.yml
+++ b/.github/workflows/notebooks.yml
@@ -32,6 +32,11 @@ jobs:
           poetry install --with dev
       - name: build books
         run: poetry run jupyter-book build notebooks
+  deploy:
+    runs-on: ubuntu-latest
+    needs: check
+    if: github.ref == 'refs/heads/master'
+    steps:
       - name: Github Pages action
         uses: peaceiris/actions-gh-pages@v3.6.1
         with: