diff --git a/Chapter16/frontend-podaffinity-host.yaml b/Chapter16/frontend-podaffinity-host.yaml
index 30ecb64..939cf8a 100644
--- a/Chapter16/frontend-podaffinity-host.yaml
+++ b/Chapter16/frontend-podaffinity-host.yaml
@@ -1,9 +1,12 @@
-apiVersion: extensions/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   name: frontend
 spec:
   replicas: 5
+  selector:
+   matchLabels:
+    app: frontend
   template:
     metadata:
       labels:
diff --git a/Chapter16/preferred-deployment.yaml b/Chapter16/preferred-deployment.yaml
index a3a6275..f79a2ae 100644
--- a/Chapter16/preferred-deployment.yaml
+++ b/Chapter16/preferred-deployment.yaml
@@ -1,9 +1,12 @@
-apiVersion: extensions/v1beta1
+apiVersion: apps/v1
 kind: Deployment
 metadata:
   name: pref
 spec:
   replicas: 5
+  selector:
+   matchLabels:
+    app: pref
   template:
     metadata:
       labels: