diff --git a/package.json b/package.json
index e799b0b..7d7ec36 100644
--- a/package.json
+++ b/package.json
@@ -34,7 +34,7 @@
     "grunt-simple-mocha": "^0.4",
     "load-grunt-tasks": "^3.3.0",
     "mocha": "^2.3.3",
-    "sinon": "^1.17.1"
+    "sinon": "^2.2.0"
   },
   "peerDependencies": {
     "karma": ">=0.9"