diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 5418da7..2f1b6bb 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -84,7 +84,7 @@ jobs:
       - uses: actions/checkout@61b9e3751b92087fd0b06925ba6dd6314e06f089 # master
       - uses: ruby/setup-ruby@v1
         with:
-          ruby-version: "4.0.3"
+          ruby-version: "4.0.4"
           bundler-cache: true
 
       - run: bundle exec rubocop --parallel --color