diff --git a/.github/workflows/deploy-docs.yaml b/.github/workflows/deploy-docs.yaml
index 7024b06..ee79455 100644
--- a/.github/workflows/deploy-docs.yaml
+++ b/.github/workflows/deploy-docs.yaml
@@ -36,7 +36,7 @@ jobs:
 
       # Deploy the book's HTML to gh-pages branch
       - name: GitHub Pages action
-        uses: peaceiris/actions-gh-pages@v3
+        uses: peaceiris/actions-gh-pages@v4
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           publish_dir: book/_build/html