diff --git a/workloads/nextcloud/nextcloud-cron.yml b/workloads/nextcloud/nextcloud-cron.yml
index 6750375..f28c7c6 100644
--- a/workloads/nextcloud/nextcloud-cron.yml
+++ b/workloads/nextcloud/nextcloud-cron.yml
@@ -5,13 +5,15 @@ metadata:
   namespace: nextcloud
 spec:
   schedule: "*/5 * * * *"
+  concurrencyPolicy: Forbid
   jobTemplate:
     spec:
       template:
         spec:
           containers:
           - name: busybox
-            image: busybox
+            image: busybox:1.13.1
+            imagePullPolicy: IfNotPresent
             command:
             - "wget"
             - "http://nextcloud/cron.php"