diff --git a/package.json b/package.json
index 4e46a26..6945bdf 100644
--- a/package.json
+++ b/package.json
@@ -36,7 +36,7 @@
   "devDependencies": {
     "@types/node": "^6.0.70",
     "chai": "^3.5.0",
-    "mocha": "^3.2.0",
+    "mocha": "^5.2.0",
     "rewire": "^4.0.1",
     "typescript": "^3.1.3"
   },