diff --git a/.github/workflows/gh-pages.yml b/.github/workflows/gh-pages.yml
index d6cd42aa..a7400ed4 100644
--- a/.github/workflows/gh-pages.yml
+++ b/.github/workflows/gh-pages.yml
@@ -35,7 +35,7 @@ jobs:
             - run: mdbook build docs
 
             - name: Deploy
-              uses: peaceiris/actions-gh-pages@v3
+              uses: peaceiris/actions-gh-pages@v4
               with:
                   github_token: ${{ secrets.GITHUB_TOKEN }}
                   publish_dir: ./docs/book/