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 da2d60fdb219c..ce3eb1bf7406c 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:
@@ -58,4 +62,4 @@ spec:
       volumes:
       - name: mysql-persistent-storage
         persistentVolumeClaim:
-          claimName: mysql-pv-claim
\ No newline at end of file
+          claimName: mysql-pv-claim
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 a38d97d076538..c354cdef884db 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:
@@ -60,4 +64,4 @@ spec:
       volumes:
       - name: wordpress-persistent-storage
         persistentVolumeClaim:
-          claimName: wp-pv-claim
\ No newline at end of file
+          claimName: wp-pv-claim
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 f0d7e903511c9..ce3eb1bf7406c 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
@@ -62,4 +62,4 @@ spec:
       volumes:
       - name: mysql-persistent-storage
         persistentVolumeClaim:
-          claimName: mysql-pv-claim
\ No newline at end of file
+          claimName: mysql-pv-claim
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 b74016a9c6241..c354cdef884db 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
@@ -64,4 +64,4 @@ spec:
       volumes:
       - name: wordpress-persistent-storage
         persistentVolumeClaim:
-          claimName: wp-pv-claim
\ No newline at end of file
+          claimName: wp-pv-claim