diff --git a/guestbook/guestbook-ui-svc.yaml b/guestbook/guestbook-ui-svc.yaml
index e8a4a27..fd9cf73 100644
--- a/guestbook/guestbook-ui-svc.yaml
+++ b/guestbook/guestbook-ui-svc.yaml
@@ -2,6 +2,7 @@ apiVersion: v1
 kind: Service
 metadata:
   name: guestbook-ui
+  argocd.argoproj.io/sync-wave: "1"
 spec:
   ports:
   - port: 80