diff --git a/package.json b/package.json
index 3e11d60..8c7f15b 100644
--- a/package.json
+++ b/package.json
@@ -39,7 +39,7 @@
     "chai": "^3.2.0",
     "istanbul": "^0.4.2",
     "mocha": "^3.2.0",
-    "sinon": "^2.1.0",
+    "sinon": "^2.3.1",
     "sinon-chai": "^2.8.0"
   },
   "dependencies": {