diff --git a/package.json b/package.json
index 06021c5..fe36205 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,7 @@
   },
   "devDependencies": {
     "blue-tape": "^1.0.0",
-    "mocha": "4.1.0",
+    "mocha": "5.0.0",
     "ts-node": "^4.0.0",
     "tslint": "github:unional/tslint",
     "tslint-config-typings": "^0.3.0",