diff --git a/.github/workflows/maven.yml b/.github/workflows/maven.yml
index ca7689c8..e8ef5340 100644
--- a/.github/workflows/maven.yml
+++ b/.github/workflows/maven.yml
@@ -20,7 +20,7 @@ jobs:
 
     steps:
     - name: Checkout project
-      uses: actions/checkout@v4
+      uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6
 
     - name: Set up JDK
       uses: actions/setup-java@v3