diff --git a/package.json b/package.json
index b136f9b..d295bc6 100644
--- a/package.json
+++ b/package.json
@@ -66,7 +66,8 @@
     "view-helpers": "latest",
     "socket.io": "~0.9.16",
     "moment": "~2.5.0",
-    "sinon": "~1.7.3"
+    "sinon": "~1.7.3",
+    "chai": "~1.8.1"
   },
   "devDependencies": {
     "grunt-contrib-watch": "latest",