diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index a149f64..b6bc417 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -73,7 +73,7 @@ jobs:
       - uses: actions/checkout@master
       - uses: ruby/setup-ruby@v1
         with:
-          ruby-version: "4.0.3"
+          ruby-version: "4.0.4"
           bundler-cache: true
 
       - name: Run rubocop