diff --git a/package.json b/package.json
index 33f81fb..9f8bcda 100644
--- a/package.json
+++ b/package.json
@@ -31,7 +31,7 @@
   "devDependencies": {
     "chai": "^3.3.0",
     "coffee-script": "^1.10.0",
-    "mocha": "^3.1.2"
+    "mocha": "^3.4.0"
   },
   "engines": {
     "node": ">= 4"