diff --git a/manifest.yaml b/manifest.yaml
index 518beb8..c3d87a9 100644
--- a/manifest.yaml
+++ b/manifest.yaml
@@ -117,6 +117,7 @@ metadata:
   name: ${CI_PROJECT_PATH_SLUG}-cronjob
 spec:
   schedule: "* * * * *"
+  concurrencyPolicy: Forbid
   jobTemplate:
     spec:
       template: