diff --git a/package.json b/package.json
index 83887002..d5a21227 100644
--- a/package.json
+++ b/package.json
@@ -44,7 +44,7 @@
     "hash.js": "1.0.3",
     "jsdoc": "3.4.0",
     "level-js": "2.2.3",
-    "mocha": "1.21.5",
+    "mocha": "2.4.5",
     "uglify-js": "2.6.1",
     "v8-profiler": "5.6.1"
   }