diff --git a/src/Umbraco.Web.UI.Client/public/mockServiceWorker.js b/src/Umbraco.Web.UI.Client/public/mockServiceWorker.js
index 51d85eeebf..36a9927457 100644
--- a/src/Umbraco.Web.UI.Client/public/mockServiceWorker.js
+++ b/src/Umbraco.Web.UI.Client/public/mockServiceWorker.js
@@ -2,7 +2,7 @@
 /* tslint:disable */
 
 /**
- * Mock Service Worker (1.3.2).
+ * Mock Service Worker (1.2.3).
  * @see https://github.com/mswjs/msw
  * - Please do NOT modify this file.
  * - Please do NOT serve this file on production.