diff --git a/deploy/charts/cert-manager/templates/webhook-deployment.yaml b/deploy/charts/cert-manager/templates/webhook-deployment.yaml
index 6c13ec376bf..93354deb8c7 100644
--- a/deploy/charts/cert-manager/templates/webhook-deployment.yaml
+++ b/deploy/charts/cert-manager/templates/webhook-deployment.yaml
@@ -55,6 +55,9 @@ spec:
       {{- if .Values.webhook.hostNetwork }}
       hostNetwork: true
       {{- end }}
+      {{- if .Values.webhook.hostNetwork }}
+      dnsPolicy: ClusterFirstWithHostNet
+      {{- end }}
       containers:
         - name: {{ .Chart.Name }}-webhook
           {{- with .Values.webhook.image }}