diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index d0fc552..68ddf80 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: ruby/setup-ruby@v1
     - name: Install mdl gem
       run: gem install mdl