diff --git a/package.json b/package.json
index 3bb53be..49ce46c 100644
--- a/package.json
+++ b/package.json
@@ -30,6 +30,6 @@
   "devDependencies": {
     "chai": "^4.0.1",
     "istanbul": "^0.4.5",
-    "mocha": "^3.3.0"
+    "mocha": "^3.5.2"
   }
 }