diff --git a/.github/workflows/maven.yml b/.github/workflows/maven.yml
index 328482e6..9d1284c2 100644
--- a/.github/workflows/maven.yml
+++ b/.github/workflows/maven.yml
@@ -15,7 +15,7 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v2
+      uses: actions/checkout@3df4ab11eba7bda6032a0b82a6bb43b11571feac # v4
     - name: Set up JDK 1.8
       uses: actions/setup-java@v2
       with: