diff --git a/package.json b/package.json
index d0bd010..b0a8526 100644
--- a/package.json
+++ b/package.json
@@ -37,7 +37,7 @@
     "quote": "0.4.0"
   },
   "devDependencies": {
-    "mocha": "2.5.3",
+    "mocha": "5.1.1",
     "pre-git": "0.8.2",
     "semantic-release": "15.1.7",
     "travis-deploy-once": "4.4.1"