diff --git a/package.json b/package.json
index 5413fec..42611fc 100644
--- a/package.json
+++ b/package.json
@@ -5,7 +5,7 @@
   "main": "index.js",
   "devDependencies": {
     "expect.js": "^0.3.1",
-    "mocha": "^3.0.2"
+    "mocha": "^5.0.4"
   },
   "scripts": {
     "test": "mocha --bail"