diff --git a/package.json b/package.json
index c495380..e0888d3 100644
--- a/package.json
+++ b/package.json
@@ -45,7 +45,7 @@
     "load-grunt-tasks": "^3.2.0",
     "mocha": "^3.2.0",
     "proxyquire": "^1.7.4",
-    "sinon": "^1.17.3",
+    "sinon": "^2.3.1",
     "sinon-chai": "^2.8.0"
   },
   "contributors": [