diff --git a/package.json b/package.json
index f0e938f..8316b2a 100644
--- a/package.json
+++ b/package.json
@@ -40,7 +40,7 @@
     "matcha": "^0.7.0",
     "nyc": "^10.0.0",
     "proxyquire": "^1.7.10",
-    "sinon": "^2.1.0"
+    "sinon": "^2.3.3"
   },
   "scripts": {
     "lint": "eslint . && jscs .",