diff --git a/.github/workflows/deploy-book.yml b/.github/workflows/deploy-book.yml
index b32b901..8e7f1a7 100644
--- a/.github/workflows/deploy-book.yml
+++ b/.github/workflows/deploy-book.yml
@@ -37,7 +37,7 @@ jobs:
           rm -f book.zip
 
       - name: Deploy to GitHub Pages
-        uses: peaceiris/actions-gh-pages@v3.8.0
+        uses: peaceiris/actions-gh-pages@v3.9.0
         if: github.ref == 'refs/heads/main'
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/deploy-preview.yaml b/.github/workflows/deploy-preview.yaml
index 538c131..2130e16 100644
--- a/.github/workflows/deploy-preview.yaml
+++ b/.github/workflows/deploy-preview.yaml
@@ -115,7 +115,7 @@ jobs:
           github.event.workflow_run.conclusion == 'success'
           && steps.find-pull-request.outputs.number != ''
           && steps.fc.outputs.comment-id != ''
-        uses: peaceiris/actions-gh-pages@v3.8.0
+        uses: peaceiris/actions-gh-pages@v3.9.0
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           publish_dir: notebooks/_build/html