diff --git a/package.json b/package.json
index 448039a..d1eea6d 100644
--- a/package.json
+++ b/package.json
@@ -26,7 +26,7 @@
   },
   "devDependencies": {
     "chai": "^4.1.2",
-    "mocha": "^4.0.0",
+    "mocha": "^5.0.0",
     "standard": "^10.0.3"
   }
 }