diff --git a/package.json b/package.json
index b21df78..4bd2ad2 100644
--- a/package.json
+++ b/package.json
@@ -33,7 +33,7 @@
     "koa-bodyparser": "^1.4.1",
     "mocha": "^2.0.1",
     "should": "^4.4.1",
-    "sinon": "^1.14.1",
+    "sinon": "^11.1.0",
     "supertest": "^0.15.0"
   },
   "engines": {