diff --git a/mirror.txt b/mirror.txt
index da779ed..f0af0e5 100644
--- a/mirror.txt
+++ b/mirror.txt
@@ -69,6 +69,7 @@ k8s.gcr.io/cpa/cluster-proportional-autoscaler-amd64
 k8s.gcr.io/dns/k8s-dns-node-cache
 k8s.gcr.io/etcd
 k8s.gcr.io/ingress-nginx/controller
+k8s.gcr.io/ingress-nginx/kube-webhook-certgen
 k8s.gcr.io/kube-apiserver
 k8s.gcr.io/kube-controller-manager
 k8s.gcr.io/kube-proxy