diff --git a/common/oidc-client/oauth2-proxy/components/configure-self-signed-kubernetes-oidc-issuer/cronjob.kubeflow-m2m-oidc-configurator.yaml b/common/oidc-client/oauth2-proxy/components/configure-self-signed-kubernetes-oidc-issuer/cronjob.kubeflow-m2m-oidc-configurator.yaml
index 54849a799d..c735e8f44d 100644
--- a/common/oidc-client/oauth2-proxy/components/configure-self-signed-kubernetes-oidc-issuer/cronjob.kubeflow-m2m-oidc-configurator.yaml
+++ b/common/oidc-client/oauth2-proxy/components/configure-self-signed-kubernetes-oidc-issuer/cronjob.kubeflow-m2m-oidc-configurator.yaml
@@ -5,6 +5,7 @@ metadata:
   namespace: istio-system
 spec:
   schedule: '* * * * *'
+  concurrencyPolicy: Forbid
   jobTemplate:
     spec:
       ttlSecondsAfterFinished: 60