diff --git a/kustomize-guestbook/base/kustomization.yaml b/kustomize-guestbook/base/kustomization.yaml
index 6262715..cbaba90 100644
--- a/kustomize-guestbook/base/kustomization.yaml
+++ b/kustomize-guestbook/base/kustomization.yaml
@@ -3,3 +3,5 @@ namePrefix: kustomize-
 resources:
 - guestbook-ui-deployment.yaml
 - guestbook-ui-svc.yaml
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
diff --git a/kustomize-guestbook/dev/kustomization.yaml b/kustomize-guestbook/dev/kustomization.yaml
index c08e342..b15357a 100644
--- a/kustomize-guestbook/dev/kustomization.yaml
+++ b/kustomize-guestbook/dev/kustomization.yaml
@@ -5,3 +5,5 @@ bases:
 
 commonLabels:
   environment: dev
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization
diff --git a/kustomize-guestbook/prod/kustomization.yaml b/kustomize-guestbook/prod/kustomization.yaml
index ddde8be..a01b2a8 100644
--- a/kustomize-guestbook/prod/kustomization.yaml
+++ b/kustomize-guestbook/prod/kustomization.yaml
@@ -6,6 +6,8 @@ bases:
 commonLabels:
   environment: prod
 
-imageTags:
-  - name: gcr.io/heptio-images/ks-guestbook-demo
-    newTag: "0.1"
+images:
+- name: gcr.io/heptio-images/ks-guestbook-demo
+  newTag: "0.1"
+apiVersion: kustomize.config.k8s.io/v1beta1
+kind: Kustomization