diff --git a/package.json b/package.json
index d77775c..e57a4e7 100644
--- a/package.json
+++ b/package.json
@@ -60,7 +60,7 @@
     "chai-as-promised": "^6.0.0",
     "istanbul": "^0.4.3",
     "mocha": "^3.0.0",
-    "sinon": "^1.17.3",
+    "sinon": "^2.3.2",
     "sinon-as-promised": "^4.0.0"
   }
 }