diff --git a/package.json b/package.json
index 9924706..8a1bdf7 100644
--- a/package.json
+++ b/package.json
@@ -61,7 +61,7 @@
     "lodash": "^4.17.4",
     "ora": "^1.1.0",
     "phantomjs-prebuilt": "^2.1.3",
-    "sinon": "^1.15.4",
+    "sinon": "^2.0.0",
     "time-grunt": "^1.1.0",
     "uglify-js": "^2.8.12"
   },