diff --git a/package.json b/package.json
index e0b7cf6..0375992 100644
--- a/package.json
+++ b/package.json
@@ -51,7 +51,7 @@
     "swint-yuidoc": "1.0.10"
   },
   "devDependencies": {
-    "mocha": "3.5.3",
+    "mocha": "4.0.0",
     "eslint": "4.7.0",
     "request": "2.81.0"
   }