1 files changed, 2 insertions, 0 deletions
diff --git a/worker.js b/worker.js
index 7d27d4d..dc77d67 100644
--- a/worker.js
+++ b/worker.js
@@ -17,6 +17,8 @@ self.addEventListener('install', function(event) {
 			'css/index.css',
 			'css/transitions.css',
 			'offline.html',
+			'lib/promise.js',
+			'lib/fetch.js',
 			'lib/zip.min.js',
 			'lib/epub.js',
 			'lib/localforage.min.js',