diff --git a/modules/restserver/src/main/templates/sw.js b/modules/restserver/src/main/templates/sw.js
index 243e61c5..1bcbde18 100644
--- a/modules/restserver/src/main/templates/sw.js
+++ b/modules/restserver/src/main/templates/sw.js
@@ -1,5 +1,5 @@
 // use a cacheName for cache versioning
-var cacheName = 'v1:static';
+var cacheName = 'v{{ flags.uiVersion }}:static';
 
 // during the install phase you usually want to cache static assets
 self.addEventListener('install', function(e) {