diff --git a/package.json b/package.json
index 9cb2a6d..7997d5d 100644
--- a/package.json
+++ b/package.json
@@ -46,7 +46,7 @@
     "express": "^4.14.0",
     "mocha": "^3.3.0",
     "sinon": "^2.1.0",
-    "sinon-chai": "^2.9.0",
+    "sinon-chai": "^3.1.0",
     "supertest": "^2.0.1"
   }
 }