diff --git a/.github/workflows/config.yml b/.github/workflows/config.yml
index f1a0cf2..74380f9 100644
--- a/.github/workflows/config.yml
+++ b/.github/workflows/config.yml
@@ -5,7 +5,7 @@ jobs:
     name: Prekin CI
     runs-on: ubuntu-latest
     container:
-      image: ruby:3.4.9
+      image: ruby:4.0.2
       env:
         BUNDLE_PATH: vendor/bundle
     steps: