diff --git a/.github/workflows/app_up_cronjob.yml b/.github/workflows/app_up_cronjob.yml
index 653acc1..493b1bc 100644
--- a/.github/workflows/app_up_cronjob.yml
+++ b/.github/workflows/app_up_cronjob.yml
@@ -10,7 +10,7 @@ jobs:
 
     steps:
     - name: Check Out
-      uses: actions/checkout@v2
+      uses: actions/checkout@main
 
     - name: Create Empty File
       run: echo > up_app_empty_file.txt