diff --git a/docs/book/src/cronjob-tutorial/testdata/project/config/default/manager_webhook_patch.yaml b/docs/book/src/cronjob-tutorial/testdata/project/config/default/manager_webhook_patch.yaml
index f2f7157b464..4f4fd2bbc05 100644
--- a/docs/book/src/cronjob-tutorial/testdata/project/config/default/manager_webhook_patch.yaml
+++ b/docs/book/src/cronjob-tutorial/testdata/project/config/default/manager_webhook_patch.yaml
@@ -9,7 +9,7 @@ spec:
       containers:
       - name: manager
         ports:
-        - containerPort: 443
+        - containerPort: 8443
           name: webhook-server
           protocol: TCP
         volumeMounts:
diff --git a/docs/book/src/cronjob-tutorial/testdata/project/config/webhook/service.yaml b/docs/book/src/cronjob-tutorial/testdata/project/config/webhook/service.yaml
index b4861025ab4..bd858f90193 100644
--- a/docs/book/src/cronjob-tutorial/testdata/project/config/webhook/service.yaml
+++ b/docs/book/src/cronjob-tutorial/testdata/project/config/webhook/service.yaml
@@ -6,7 +6,7 @@ metadata:
   namespace: system
 spec:
   ports:
-    - port: 443
-      targetPort: 443
+    - port: 8443
+      targetPort: 8443
   selector:
     control-plane: controller-manager
diff --git a/docs/book/src/migration/testdata/gopath/project-v1/config/manager/manager.yaml b/docs/book/src/migration/testdata/gopath/project-v1/config/manager/manager.yaml
index 73b43ba809e..b7d2947ee51 100644
--- a/docs/book/src/migration/testdata/gopath/project-v1/config/manager/manager.yaml
+++ b/docs/book/src/migration/testdata/gopath/project-v1/config/manager/manager.yaml
@@ -19,7 +19,7 @@ spec:
     control-plane: controller-manager
     controller-tools.k8s.io: "1.0"
   ports:
-  - port: 443
+  - port: 8443
 ---
 apiVersion: apps/v1
 kind: StatefulSet
diff --git a/docs/book/src/migration/testdata/gopath/project-v1/config/webhook/webhookmanifests.yaml b/docs/book/src/migration/testdata/gopath/project-v1/config/webhook/webhookmanifests.yaml
index 88b61fc68ff..3b07f1bacd4 100644
--- a/docs/book/src/migration/testdata/gopath/project-v1/config/webhook/webhookmanifests.yaml
+++ b/docs/book/src/migration/testdata/gopath/project-v1/config/webhook/webhookmanifests.yaml
@@ -90,7 +90,7 @@ metadata:
   namespace: test-system
 spec:
   ports:
-  - port: 443
+  - port: 8443
     targetPort: 9876
   selector:
     app: webhook-server
diff --git a/pkg/scaffold/v1/manager/config.go b/pkg/scaffold/v1/manager/config.go
index 9de6602b8bb..eef11f9fbee 100644
--- a/pkg/scaffold/v1/manager/config.go
+++ b/pkg/scaffold/v1/manager/config.go
@@ -61,7 +61,7 @@ spec:
     control-plane: controller-manager
     controller-tools.k8s.io: "1.0"
   ports:
-  - port: 443
+  - port: 8443
 ---
 apiVersion: apps/v1
 kind: StatefulSet
diff --git a/pkg/scaffold/v2/webhook/service.go b/pkg/scaffold/v2/webhook/service.go
index fd754936049..53a3088f050 100644
--- a/pkg/scaffold/v2/webhook/service.go
+++ b/pkg/scaffold/v2/webhook/service.go
@@ -47,8 +47,8 @@ metadata:
   namespace: system
 spec:
   ports:
-    - port: 443
-      targetPort: 443
+    - port: 8443
+      targetPort: 8443
   selector:
     control-plane: controller-manager
 `
diff --git a/pkg/scaffold/v2/webhook_manager_patch.go b/pkg/scaffold/v2/webhook_manager_patch.go
index 9025c6e456f..042bc358ddd 100644
--- a/pkg/scaffold/v2/webhook_manager_patch.go
+++ b/pkg/scaffold/v2/webhook_manager_patch.go
@@ -47,7 +47,7 @@ spec:
       containers:
       - name: manager
         ports:
-        - containerPort: 443
+        - containerPort: 8443
           name: webhook-server
           protocol: TCP
         volumeMounts:
diff --git a/testdata/gopath/src/project/config/manager/manager.yaml b/testdata/gopath/src/project/config/manager/manager.yaml
index 2e57718d1dc..cebb8fc6bcf 100644
--- a/testdata/gopath/src/project/config/manager/manager.yaml
+++ b/testdata/gopath/src/project/config/manager/manager.yaml
@@ -19,7 +19,7 @@ spec:
     control-plane: controller-manager
     controller-tools.k8s.io: "1.0"
   ports:
-  - port: 443
+  - port: 8443
 ---
 apiVersion: apps/v1
 kind: StatefulSet
diff --git a/testdata/project-v2/config/default/manager_webhook_patch.yaml b/testdata/project-v2/config/default/manager_webhook_patch.yaml
index f2f7157b464..4f4fd2bbc05 100644
--- a/testdata/project-v2/config/default/manager_webhook_patch.yaml
+++ b/testdata/project-v2/config/default/manager_webhook_patch.yaml
@@ -9,7 +9,7 @@ spec:
       containers:
       - name: manager
         ports:
-        - containerPort: 443
+        - containerPort: 8443
           name: webhook-server
           protocol: TCP
         volumeMounts:
diff --git a/testdata/project-v2/config/webhook/service.yaml b/testdata/project-v2/config/webhook/service.yaml
index b4861025ab4..bd858f90193 100644
--- a/testdata/project-v2/config/webhook/service.yaml
+++ b/testdata/project-v2/config/webhook/service.yaml
@@ -6,7 +6,7 @@ metadata:
   namespace: system
 spec:
   ports:
-    - port: 443
-      targetPort: 443
+    - port: 8443
+      targetPort: 8443
   selector:
     control-plane: controller-manager