diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 0fd2347..0eccde2 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: set up JDK 17
       uses: actions/setup-java@v3
       with: