diff --git a/package.json b/package.json
index 4ad92b3..e4b7183 100644
--- a/package.json
+++ b/package.json
@@ -32,6 +32,6 @@
   "devDependencies": {
     "chai": "^3.5.0",
     "gen-run": "^0.1.2",
-    "mocha": "^3.2.0"
+    "mocha": "^6.1.4"
   }
 }