diff --git a/services/monitoring/grafana-smtp-sync-cronjob.yaml b/services/monitoring/grafana-smtp-sync-cronjob.yaml
index 8922942..3b92d4c 100644
--- a/services/monitoring/grafana-smtp-sync-cronjob.yaml
+++ b/services/monitoring/grafana-smtp-sync-cronjob.yaml
@@ -15,7 +15,7 @@ spec:
           restartPolicy: OnFailure
           containers:
             - name: sync
-              image: bitnami/kubectl:1.31
+              image: bitnami/kubectl@sha256:554ab88b1858e8424c55de37ad417b16f2a0e65d1607aa0f3fe3ce9b9f10b131
               command: ["/bin/sh", "-c"]
               args:
                 - |