diff --git a/js/background.js b/js/background.js
deleted file mode 100644
index 693a731..0000000
--- a/js/background.js
+++ /dev/null
@@ -1,46 +0,0 @@
-/*
-    Copyright 2018 Google LLC
-
-    Licensed under the Apache License, Version 2.0 (the "License");
-    you may not use this file except in compliance with the License.
-    You may obtain a copy of the License at
-
-        https://www.apache.org/licenses/LICENSE-2.0
-
-    Unless required by applicable law or agreed to in writing, software
-    distributed under the License is distributed on an "AS IS" BASIS,
-    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-    See the License for the specific language governing permissions and
-    limitations under the License.
-*/
-
-// This listener is called when the user clicks the extension icon.
-
-// If the current URL matches a Jupyter notebook hosted on github.com
-// or on gist.github.com, this function will open a new tab and load
-// the notebook into Colab.
-
-chrome.action.onClicked.addListener(function(tab) {
-  const colab_url = 'https://colab.research.google.com/';
-  const github = /^https?:\/\/github\.com\/(.+)\/(.*\.ipynb)$/;
-  const gist =
-      /^https?:\/\/gist\.github\.com\/(.+)\/([a-f0-9]+(?:\#file\-.*\-ipynb)?)$/;
-
-  let path = null;
-  let url = null;
-
-  if (github.test(tab.url)) {
-    path = github.exec(tab.url);
-    url = colab_url + ['github', path[1], path[2]].join('/');
-  } else if (gist.test(tab.url)) {
-    path = gist.exec(tab.url);
-    url = colab_url + ['gist', path[1], path[2]].join('/');
-  }
-
-  if (url) {
-    chrome.tabs.create({'url': url});
-  } else {
-    console.warn(`Current page (${
-        tab.url}) is not recognized as a GitHub-hosted notebook.`);
-  }
-});
diff --git a/manifest.json b/manifest.json
index 3b772a2..cec3a5d 100644
--- a/manifest.json
+++ b/manifest.json
@@ -18,7 +18,7 @@
     "default_title": "Open notebook in Google Colab"
   },
   "background": {
-    "service_worker": "js/background.js"
+    "service_worker": "service_worker_compiled.js"
   },
   "permissions": ["activeTab"]
 }