diff --git a/config/default/manager_webhook_patch.yaml b/config/default/manager_webhook_patch.yaml
index 5859c7f8510..b3511784f83 100644
--- a/config/default/manager_webhook_patch.yaml
+++ b/config/default/manager_webhook_patch.yaml
@@ -9,7 +9,7 @@ spec:
       containers:
       - name: manager
         ports:
-        - containerPort: 443
+        - containerPort: 9443
           name: webhook-server
           protocol: TCP
         - containerPort: 8081
diff --git a/config/webhook/service.yaml b/config/webhook/service.yaml
index b4861025ab4..c8eb44562f0 100644
--- a/config/webhook/service.yaml
+++ b/config/webhook/service.yaml
@@ -6,7 +6,7 @@ metadata:
   namespace: system
 spec:
   ports:
-    - port: 443
-      targetPort: 443
+    - port: 9443
+      targetPort: 9443
   selector:
     control-plane: controller-manager
diff --git a/main.go b/main.go
index ab577f58258..c6b1f5828db 100644
--- a/main.go
+++ b/main.go
@@ -112,6 +112,7 @@ func main() {
 		MetricsBindAddress:   metricsAddr,
 		LeaderElection:       enableLeaderElection,
 		LivenessEndpointName: "/healthz",
+		Port:                 9443,
 	})
 
 	if err != nil {