diff --git a/package.json b/package.json
index 221b97b..d0a2a60 100644
--- a/package.json
+++ b/package.json
@@ -69,7 +69,7 @@
     "tslint": "tslint -p ./tsconfig.json"
   },
   "devDependencies": {
-    "@types/mocha": "^2.2.32",
+    "@types/mocha": "^5.0.0",
     "@types/node": "^7.0.12",
     "mocha": "^3.2.0",
     "tslint": "^5.1.0",