diff --git a/.github/workflows/maven.yml b/.github/workflows/maven.yml
index 61a55b0..8fcbe6b 100644
--- a/.github/workflows/maven.yml
+++ b/.github/workflows/maven.yml
@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v2.3.4
     - name: Set up JDK 1.8
       uses: actions/setup-java@v1
       with: