diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 578aae6..bd6b763 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -98,7 +98,7 @@ jobs:
         run: bundle exec jekyll build --trace --baseurl "${BASE_URL}"
 
       - name: "Upload 'github-pages' artifact."
-        uses: actions/upload-pages-artifact@v3
+        uses: actions/upload-pages-artifact@v4
         with:
           path: _site/