diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e0278a1..ca7173a 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -35,10 +35,10 @@ jobs:
 
       - uses: actions/setup-python@v2
         with:
-          python-version: '3.8'
+          python-version: '3.11'
 
       - name: Install bundler
-        run: gem install bundler
+        run: gem install bundler -v 2.4.22
 
       - name: Configure Jekyll
         if: matrix.jekyll-versions != '(GitHub Pages)'