diff --git a/.github/workflows/danger.yml b/.github/workflows/danger.yml
index e54c05d..a22efbd 100644
--- a/.github/workflows/danger.yml
+++ b/.github/workflows/danger.yml
@@ -19,7 +19,7 @@ jobs:
       - name: ruby setup
         uses: ruby/setup-ruby@v1
         with:
-          ruby-version: 3.4.8
+          ruby-version: 4.0.0
           bundler-cache: true
       - name: Checkout code
         uses: actions/checkout@v6