diff --git a/pwabuilder-sw.js b/pwabuilder-sw.js
index 683f2f7..7e9da98 100644
--- a/pwabuilder-sw.js
+++ b/pwabuilder-sw.js
@@ -45,3 +45,23 @@ self.addEventListener('fetch', (event) => {
     })());
   }
 });
+
+
+// This is the service worker with the Cache-first network
+
+const CACHE = "pwabuilder-precache";
+
+importScripts('https://storage.googleapis.com/workbox-cdn/releases/5.1.2/workbox-sw.js');
+
+self.addEventListener("message", (event) => {
+  if (event.data && event.data.type === "SKIP_WAITING") {
+    self.skipWaiting();
+  }
+});
+
+workbox.routing.registerRoute(
+  new RegExp('/*'),
+  new workbox.strategies.CacheFirst({
+    cacheName: CACHE
+  })
+);