diff --git a/package.json b/package.json
index 7d1a7b8..0ca3b28 100644
--- a/package.json
+++ b/package.json
@@ -40,7 +40,7 @@
     "chai": "3.5.0",
     "mocha": "3.1.2",
     "sinon": "1.17.4",
-    "sinon-chai": "2.8.0"
+    "sinon-chai": "2.9.0"
   },
   "repository": {
     "type": "git",