diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index f39f341..10b4e54 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -85,7 +85,7 @@ jobs:
 
     - name: Deploy docs to GitHub Pages
       if: success() && github.event_name == 'push' && github.ref == 'refs/heads/main'
-      uses: peaceiris/actions-gh-pages@v3
+      uses: peaceiris/actions-gh-pages@v4
       with:
         github_token: ${{ secrets.GITHUB_TOKEN }}
         publish_dir: docs/_build/html