diff --git a/package.json b/package.json
index 67a6106..655447d 100644
--- a/package.json
+++ b/package.json
@@ -31,7 +31,7 @@
     "jshint": "^2.8.0",
     "mocha": "^2.3.3",
     "should": "^7.1.0",
-    "sinon": "^1.14.1",
+    "sinon": "^9.2.4",
     "supertest": "^0.15.0"
   },
   "engines": {