diff --git a/.github/workflows/mkdocs.yml b/.github/workflows/mkdocs.yml
index 33282fcb2..ac18975a6 100644
--- a/.github/workflows/mkdocs.yml
+++ b/.github/workflows/mkdocs.yml
@@ -42,7 +42,7 @@ jobs:
         run: mkdocs build
 
       - name: Deploy
-        uses: peaceiris/actions-gh-pages@v3
+        uses: peaceiris/actions-gh-pages@v4
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           publish_dir: ./site