diff --git a/package.json b/package.json
index c1f9213..cf2c569 100644
--- a/package.json
+++ b/package.json
@@ -59,7 +59,7 @@
     "grunt-mocha": "^0.4.11",
     "mocha": "^2.5.3",
     "nodemon": "~1.10.2",
-    "sinon": "^1.14.1",
+    "sinon": "^2.3.0",
     "sinon-as-promised": "^4.0.3"
   },
   "testling": {