diff --git a/package.json b/package.json
index 19d3821..72e94cb 100644
--- a/package.json
+++ b/package.json
@@ -40,6 +40,6 @@
     "ioredis": "^2.4.2",
     "istanbul": "^0.4.5",
     "mocha": "^3.2.0",
-    "sinon": "^1.17.6"
+    "sinon": "^2.3.0"
   }
 }