diff --git a/README.md b/README.md
index 1be07ab..10e14d8 100644
--- a/README.md
+++ b/README.md
@@ -12,6 +12,7 @@ to explore ArgoCD and GitOps!
 | [jsonnet-guestbook](jsonnet-guestbook/) | The guestbook application as a raw jsonnet |
 | [kustomize-guestbook](kustomize-guestbook/) | The guestbook application as a Kustomize 2 app |
 | [pre-post-sync](pre-post-sync/) | Demonstrates Argo CD PreSync and PostSync hooks |
+| [sync-waves](sync-waves/) | Demonstrates Argo CD sync waves with hooks |
 | [helm-dependency](helm-dependency/) | Demonstrates how to customize an OTS (off-the-shelf) helm chart from an upstream repo |
 | [sock-shop](sock-shop/) | A microservices demo application (https://microservices-demo.github.io) |
 | [plugins](plugins/) | Applications which demonstrate config management plugins usage |
diff --git a/guestbook/guestbook-ui-deployment.yaml b/guestbook/guestbook-ui-deployment.yaml
index f036896..f9b5a83 100644
--- a/guestbook/guestbook-ui-deployment.yaml
+++ b/guestbook/guestbook-ui-deployment.yaml
@@ -2,8 +2,6 @@ apiVersion: apps/v1beta2
 kind: Deployment
 metadata:
   name: guestbook-ui
-  annotations:
-    argocd.argoproj.io/sync-wave: "80"
 spec:
   replicas: 1
   revisionHistoryLimit: 3
@@ -16,13 +14,7 @@ spec:
         app: guestbook-ui
     spec:
       containers:
-      - image: gcr.io/heptio-images/ks-guestbook-demo:0.1
+      - image: gcr.io/heptio-images/ks-guestbook-demo:0.2
         name: guestbook-ui
         ports:
         - containerPort: 80
-        readinessProbe:
-          exec:
-            command:
-            - "true"
-          initialDelaySeconds: 30
-          periodSeconds: 30
\ No newline at end of file
diff --git a/guestbook/guestbook-ui-svc.yaml b/guestbook/guestbook-ui-svc.yaml
index 95d9487..e8a4a27 100644
--- a/guestbook/guestbook-ui-svc.yaml
+++ b/guestbook/guestbook-ui-svc.yaml
@@ -2,8 +2,6 @@ apiVersion: v1
 kind: Service
 metadata:
   name: guestbook-ui
-  annotations:
-    argocd.argoproj.io/sync-wave: "81"
 spec:
   ports:
   - port: 80
diff --git a/sync-waves/manifests.yaml b/sync-waves/manifests.yaml
index f264a19..5e4e14a 100644
--- a/sync-waves/manifests.yaml
+++ b/sync-waves/manifests.yaml
@@ -4,7 +4,7 @@ kind: Job
 metadata:
   name: upgrade-sql-schema
   annotations:
-    argocd.argoproj.io/hook: PostSync
+    argocd.argoproj.io/hook: PreSync
 spec:
   template:
     spec: