diff --git a/cn/docs/tutorials/stateful-application/mysql-wordpress-persistent-volume/mysql-deployment.yaml b/cn/docs/tutorials/stateful-application/mysql-wordpress-persistent-volume/mysql-deployment.yaml
index 2253600de6..ce3eb1bf74 100644
--- a/cn/docs/tutorials/stateful-application/mysql-wordpress-persistent-volume/mysql-deployment.yaml
+++ b/cn/docs/tutorials/stateful-application/mysql-wordpress-persistent-volume/mysql-deployment.yaml
@@ -25,13 +25,17 @@ spec:
     requests:
       storage: 20Gi
 ---
-apiVersion: extensions/v1beta1
+apiVersion: apps/v1beta2
 kind: Deployment
 metadata:
   name: wordpress-mysql
   labels:
     app: wordpress
 spec:
+  selector:
+    matchLabels:
+      app: wordpress
+      tier: mysql
   strategy:
     type: Recreate
   template:
diff --git a/cn/docs/tutorials/stateful-application/mysql-wordpress-persistent-volume/wordpress-deployment.yaml b/cn/docs/tutorials/stateful-application/mysql-wordpress-persistent-volume/wordpress-deployment.yaml
index e15edc5998..c354cdef88 100644
--- a/cn/docs/tutorials/stateful-application/mysql-wordpress-persistent-volume/wordpress-deployment.yaml
+++ b/cn/docs/tutorials/stateful-application/mysql-wordpress-persistent-volume/wordpress-deployment.yaml
@@ -25,13 +25,17 @@ spec:
     requests:
       storage: 20Gi
 ---
-apiVersion: extensions/v1beta1
+apiVersion: apps/v1beta2
 kind: Deployment
 metadata:
   name: wordpress
   labels:
     app: wordpress
 spec:
+  selector:
+    matchLabels:
+      app: wordpress
+      tier: frontend
   strategy:
     type: Recreate
   template:
diff --git a/docs/tutorials/stateful-application/mysql-wordpress-persistent-volume/mysql-deployment.yaml b/docs/tutorials/stateful-application/mysql-wordpress-persistent-volume/mysql-deployment.yaml
index 2253600de6..ce3eb1bf74 100644
--- a/docs/tutorials/stateful-application/mysql-wordpress-persistent-volume/mysql-deployment.yaml
+++ b/docs/tutorials/stateful-application/mysql-wordpress-persistent-volume/mysql-deployment.yaml
@@ -25,13 +25,17 @@ spec:
     requests:
       storage: 20Gi
 ---
-apiVersion: extensions/v1beta1
+apiVersion: apps/v1beta2
 kind: Deployment
 metadata:
   name: wordpress-mysql
   labels:
     app: wordpress
 spec:
+  selector:
+    matchLabels:
+      app: wordpress
+      tier: mysql
   strategy:
     type: Recreate
   template:
diff --git a/docs/tutorials/stateful-application/mysql-wordpress-persistent-volume/wordpress-deployment.yaml b/docs/tutorials/stateful-application/mysql-wordpress-persistent-volume/wordpress-deployment.yaml
index e15edc5998..c354cdef88 100644
--- a/docs/tutorials/stateful-application/mysql-wordpress-persistent-volume/wordpress-deployment.yaml
+++ b/docs/tutorials/stateful-application/mysql-wordpress-persistent-volume/wordpress-deployment.yaml
@@ -25,13 +25,17 @@ spec:
     requests:
       storage: 20Gi
 ---
-apiVersion: extensions/v1beta1
+apiVersion: apps/v1beta2
 kind: Deployment
 metadata:
   name: wordpress
   labels:
     app: wordpress
 spec:
+  selector:
+    matchLabels:
+      app: wordpress
+      tier: frontend
   strategy:
     type: Recreate
   template: