diff --git a/package.json b/package.json
index 303a0aa..a8890e4 100644
--- a/package.json
+++ b/package.json
@@ -49,7 +49,7 @@
   "devDependencies": {
     "@commitlint/cli": "^6.2.0",
     "@commitlint/config-conventional": "^6.1.3",
-    "@types/mocha": "5.0.0",
+    "@types/mocha": "5.2.5",
     "@types/mz": "^0.0.31",
     "@types/node": "^8.0.24",
     "@types/semver": "^5.3.34",