diff --git a/pos/templates/catalog.html b/pos/templates/catalog.html
index a470b88..0a9f7b2 100644
--- a/pos/templates/catalog.html
+++ b/pos/templates/catalog.html
@@ -293,7 +293,20 @@
   <script src="/pos/static/js/chat.js" defer></script>
   <script src="/pos/static/js/sync-engine.js" defer></script>
   <script src="/pos/static/js/onboarding.js" defer></script>
-  <script>if('serviceWorker' in navigator){navigator.serviceWorker.register('/pos/sw.js',{scope:'/pos/'});}</script>
+  <script>
+    if('serviceWorker' in navigator){
+      navigator.serviceWorker.register('/pos/sw.js',{scope:'/pos/'}).then(function(reg){
+        reg.addEventListener('updatefound', function(){
+          var newWorker = reg.installing;
+          newWorker.addEventListener('statechange', function(){
+            if(newWorker.state === 'activated'){
+              window.location.reload();
+            }
+          });
+        });
+      });
+    }
+  </script>
   <script src="/pos/static/js/pwa-install.js" defer></script>
   <script src="/pos/static/js/brand-catalog.js?v=3" defer></script>
 </body>