diff --git a/infrastructure/sandbox/PreProvisioner/lambda/deploy_terraform/fleet/templates/cronjobs.yaml b/infrastructure/sandbox/PreProvisioner/lambda/deploy_terraform/fleet/templates/cronjobs.yaml
index 125350bf4c..d6dde2a192 100644
--- a/infrastructure/sandbox/PreProvisioner/lambda/deploy_terraform/fleet/templates/cronjobs.yaml
+++ b/infrastructure/sandbox/PreProvisioner/lambda/deploy_terraform/fleet/templates/cronjobs.yaml
@@ -10,6 +10,7 @@ metadata:
   name: {{ .Values.fleetName }}
   namespace: {{ .Release.Namespace }}
 spec:
+  concurrencyPolicy: Forbid
   schedule: "{{ .Values.crons.vulnerabilities }}"
   successfulJobsHistoryLimit: 0
   jobTemplate: