diff --git a/package.json b/package.json
index 610098c..d1b3472 100644
--- a/package.json
+++ b/package.json
@@ -70,7 +70,7 @@
     "mocha": "^2.5.0",
     "optimist": "^0.6.1",
     "request": "^2.72.0",
-    "sinon": "^1.17.2",
+    "sinon": "^2.1.0",
     "socket.io": "^1.4.6",
     "standard": "^5.4.1",
     "taffydb": "^2.7.2"