diff --git a/package.json b/package.json
index af598bc..a31bde7 100644
--- a/package.json
+++ b/package.json
@@ -49,7 +49,7 @@
     "istanbul": "^0.4.4",
     "jsdoc": "^3.4.3",
     "mocha": "^3.0.0",
-    "sinon": "^1.17.4"
+    "sinon": "^2.0.0"
   },
   "eslintConfig": {
     "extends": "eslint:recommended",