diff --git a/.github/workflows/deploy-docs.yml b/.github/workflows/deploy-docs.yml
index b8c20da..ffd1363 100644
--- a/.github/workflows/deploy-docs.yml
+++ b/.github/workflows/deploy-docs.yml
@@ -44,7 +44,7 @@ jobs:
 
     - name: Deploy
       if: success() && github.event_name == 'release'
-      uses: peaceiris/actions-gh-pages@v3
+      uses: peaceiris/actions-gh-pages@v4
       with:
         github_token: ${{ secrets.GITHUB_TOKEN }}
         publish_dir: doc/_build/html