diff --git a/package.json b/package.json
index 11f4fdf..4485434 100644
--- a/package.json
+++ b/package.json
@@ -56,7 +56,7 @@
     "eslint": "^4.1.0",
     "eslint-plugin-flowtype": "^2.29.2",
     "flow-bin": "^0.61.0",
-    "mocha": "^5.0.0",
+    "mocha": "^6.0.2",
     "nyc": "^11.0.0"
   },
   "dependencies": {