diff --git a/package.json b/package.json
index 446f2c6..922f28d 100644
--- a/package.json
+++ b/package.json
@@ -32,6 +32,6 @@
     "coveralls": "^2.11.9",
     "eslint": "^3.0.0",
     "istanbul": "^0.4.3",
-    "mocha": "^3.0.2"
+    "mocha": "^4.0.0"
   }
 }