diff --git a/package.json b/package.json
index 8e0dee7..74379e4 100644
--- a/package.json
+++ b/package.json
@@ -31,7 +31,7 @@
     "uuid": "^3.0.0"
   },
   "devDependencies": {
-    "mocha": "^3.0.0",
+    "mocha": "^4.0.0",
     "should": "^13.0.1",
     "standard": "^10.0.0"
   },