diff --git a/package.json b/package.json
index 345ccdd..89a6260 100644
--- a/package.json
+++ b/package.json
@@ -25,7 +25,7 @@
   "devDependencies": {
     "mocha": "~5.2.0",
     "nock": "~10.0.6",
-    "sinon": "~1.7.3"
+    "sinon": "~2.4.1"
   },
   "engines": {
     "node": ">=0.10.x",