diff --git a/package.json b/package.json
index bc81ef6..cf58c18 100644
--- a/package.json
+++ b/package.json
@@ -28,7 +28,7 @@
     "mocha": "^2.4.5",
     "mocha-jshint": "^2.3.1",
     "request": "^2.69.0",
-    "sinon": "^1.17.3",
+    "sinon": "^2.2.0",
     "sinon-chai": "^2.8.0"
   },
   "readmeFilename": "readme.md",