diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index f7868f8..672c56d 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v4
       - name: Set up Java
         uses: actions/setup-java@v2
         with: