diff --git a/.github/workflows/book.yml b/.github/workflows/book.yml
index 8b8b14063..f71a091da 100644
--- a/.github/workflows/book.yml
+++ b/.github/workflows/book.yml
@@ -26,7 +26,7 @@ jobs:
         working-directory: book
 
       - name: Deploy
-        uses: peaceiris/actions-gh-pages@v3
+        uses: peaceiris/actions-gh-pages@v4
         if: ${{ github.event_name == 'push' && github.ref == 'refs/heads/master' }}
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index ed442cbd6..f0498c8db 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -23,7 +23,7 @@ jobs:
           args: --no-deps
 
       - name: Deploy
-        uses: peaceiris/actions-gh-pages@v3
+        uses: peaceiris/actions-gh-pages@v4
         if: ${{ github.event_name == 'push' && github.ref == 'refs/heads/master' }}
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}