diff --git a/package.json b/package.json
index 9a20c417..1befacd0 100644
--- a/package.json
+++ b/package.json
@@ -79,7 +79,7 @@
     "request": "^2.81.0",
     "rimraf": "^2.5.2",
     "rxjs": "^5.2.0",
-    "sinon": "^2.1.0",
+    "sinon": "^2.3.1",
     "sinon-chai": "^2.8.0",
     "webpack": "^2.2.0"
   },