diff --git a/.github/workflows/maven.yml b/.github/workflows/maven.yml
index ebf2544..0c31d6e 100644
--- a/.github/workflows/maven.yml
+++ b/.github/workflows/maven.yml
@@ -34,7 +34,7 @@ jobs:
 #            experimental: true        
        
     steps:
-    - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
+    - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
       with:
         persist-credentials: false
     - uses: actions/cache@704facf57e6136b1bc63b828d79edcd491f0ee84 # v3.3.2