diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index c2595703..d8e56d56 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -21,7 +21,7 @@ jobs:
           make html
         working-directory: doc
       - name: Deploy
-        uses: peaceiris/actions-gh-pages@v3
+        uses: peaceiris/actions-gh-pages@v4
         if: ${{ github.event_name == 'push' && github.ref == 'refs/heads/master' }}
         with:
           publish_branch: gh-pages