diff --git a/.github/workflows/doc.yml b/.github/workflows/doc.yml
index 3faaa87..06be4da 100644
--- a/.github/workflows/doc.yml
+++ b/.github/workflows/doc.yml
@@ -65,4 +65,5 @@ jobs:
         uses: peaceiris/actions-gh-pages@v3
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
+          publish_branch: gh-pages  # default: gh-pages
           publish_dir: ./docs-dist