diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 167d1b25..0aecb28f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -36,6 +36,6 @@ jobs:
     - run: sudo apt-get update && sudo apt-get -y install libimlib2-dev chromium-browser
     - uses: ruby/setup-ruby@v1
       with:
-        ruby-version: 3.1
+        ruby-version: '3.3'
         bundler-cache: true
     - run: bundle exec rake