diff --git a/package.json b/package.json
index 71eccfe..55044bf 100644
--- a/package.json
+++ b/package.json
@@ -34,6 +34,6 @@
     "underscore": "^1.8.3"
   },
   "devDependencies": {
-    "mocha": "3.5.3"
+    "mocha": "5.2.0"
   }
 }