diff --git a/package.json b/package.json
index 592f006..54a6480 100644
--- a/package.json
+++ b/package.json
@@ -25,7 +25,7 @@
     "jshint-loader": "~0.8.3",
     "json-loader": "^0.5.4",
     "mocha": "~2.4.5",
-    "sinon": "~1.17.3",
+    "sinon": "~2.2.0",
     "webpack": "^1.12.2"
   },
   "main": "index.js",