diff --git a/demo/deploy-bookbuyer.sh b/demo/deploy-bookbuyer.sh
index 10ec932d3d..1e8bf5da3c 100755
--- a/demo/deploy-bookbuyer.sh
+++ b/demo/deploy-bookbuyer.sh
@@ -74,6 +74,14 @@ spec:
             - name: "CI_SLEEP_BETWEEN_REQUESTS_SECONDS"
               value: "$CI_SLEEP_BETWEEN_REQUESTS_SECONDS"
 
+      # This is used for Multicluster environment demos,
+      # where the bookstore will try to resolve these 2 hosts.
+      hostAliases:
+      - ip: 127.0.0.1
+        hostnames:
+        - "bookstore.bookstore.svc.cluster.alpha"
+        - "bookstore.bookstore.svc.cluster.beta"
+
       imagePullSecrets:
         - name: "$CTR_REGISTRY_CREDS_NAME"
 EOF