diff --git a/.github/workflows/ruby.yml b/.github/workflows/ruby.yml
index 699193d..e7fdb43 100644
--- a/.github/workflows/ruby.yml
+++ b/.github/workflows/ruby.yml
@@ -15,7 +15,7 @@ jobs:
       matrix:
         ruby: [ 'ruby-head', '3.1', '3.2' ]
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: ruby/setup-ruby@v1
       with:
         ruby-version: ${{ matrix.ruby }}