diff --git a/bower.json b/bower.json
index a7d64b1ac..6af89da9d 100644
--- a/bower.json
+++ b/bower.json
@@ -37,6 +37,7 @@
     "lil-uri": "^0.2.1",
     "file-saver": "^1.3.1",
     "diff-dom": "#gh-pages",
-    "alertifyjs": "^1.0.11"
+    "alertifyjs": "^1.0.11",
+    "spin.js": "^2.3.2"
   }
 }