diff --git a/.github/workflows/codecov.yml b/.github/workflows/codecov.yml
index 90d26fe..23f6c6a 100644
--- a/.github/workflows/codecov.yml
+++ b/.github/workflows/codecov.yml
@@ -15,7 +15,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: ruby/setup-ruby@v1
         with:
-          ruby-version: 3.3
+          ruby-version: 4.0.5
           bundler-cache: true
       - run: bundle config set --global path "$(pwd)/vendor/bundle"
       - run: bundle install --no-color