diff --git a/package.json b/package.json
index 7d1a7b8..2cba8df 100644
--- a/package.json
+++ b/package.json
@@ -39,7 +39,7 @@
     "eslint-config-airbnb": "4.0.0",
     "chai": "3.5.0",
     "mocha": "3.1.2",
-    "sinon": "1.17.4",
+    "sinon": "2.3.0",
     "sinon-chai": "2.8.0"
   },
   "repository": {