diff --git a/package.json b/package.json
index 7bd836f..c88f552 100644
--- a/package.json
+++ b/package.json
@@ -60,7 +60,7 @@
     "grunt-mocha": "^0.4.11",
     "mocha": "^2.5.3",
     "nodemon": "~1.10.2",
-    "sinon": "^1.14.1"
+    "sinon": "^2.1.0"
   },
   "testling": {
     "browsers": [