diff --git a/.github/workflows/hugo.yaml b/.github/workflows/hugo.yaml
index e61d90be..a93ca96e 100644
--- a/.github/workflows/hugo.yaml
+++ b/.github/workflows/hugo.yaml
@@ -19,7 +19,7 @@ jobs:
           hugo: 'true'
       - run: make web_zip
 
-      - uses: peaceiris/actions-gh-pages@v3
+      - uses: peaceiris/actions-gh-pages@v4
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           publish_branch: _hugo
diff --git a/.github/workflows/slides.yaml b/.github/workflows/slides.yaml
index 631e4512..81a1806f 100644
--- a/.github/workflows/slides.yaml
+++ b/.github/workflows/slides.yaml
@@ -19,7 +19,7 @@ jobs:
           texlive: 'true'
       - run: make slides
 
-      - uses: peaceiris/actions-gh-pages@v3
+      - uses: peaceiris/actions-gh-pages@v4
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           publish_branch: _slides