diff --git a/package.json b/package.json
index 8c906610..c6aeef81 100644
--- a/package.json
+++ b/package.json
@@ -53,7 +53,7 @@
     "typescript": "^1.8.10",
     "typings": "^1.2.0",
     "webpack": "^1.13.1",
-    "zone.js": "^0.6.12"
+    "zone.js": "^0.6.12",
     
     
     "chai": "^3.5.0",