diff --git a/.github/workflows/nix.yaml b/.github/workflows/nix.yaml
index 2d480e7..f94287d 100644
--- a/.github/workflows/nix.yaml
+++ b/.github/workflows/nix.yaml
@@ -465,7 +465,7 @@ jobs:
       - name: Build
         run: nix build .#packages.x86_64-linux.whitepaper --print-build-logs
       - name: Deploy PDF artifacts
-        uses: peaceiris/actions-gh-pages@v3
+        uses: peaceiris/actions-gh-pages@v4
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           publish_dir: result/