diff --git a/sw.js b/sw.js
index e1ab031ab4..1a49289a17 100644
--- a/sw.js
+++ b/sw.js
@@ -1,4 +1,5 @@
+/* global workbox:false */
+
 self.importScripts('/assets/js/vendor/{fileName}')
 
-const workboxSW = new self.WorkboxSW()
-workboxSW.precaching.precacheAndRoute([])
+workbox.precaching.precacheAndRoute([])