diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 65697b9..16654a9 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -48,7 +48,7 @@ jobs:
       - uses: actions/checkout@v6
       - uses: ruby/setup-ruby@v1
         with:
-          ruby-version: "3.4.9"
+          ruby-version: "4.0.2"
           bundler-cache: True
         env:
           BUNDLE_JOBS: 4