diff --git a/package.json b/package.json
index c443174..d86a035 100644
--- a/package.json
+++ b/package.json
@@ -33,6 +33,6 @@
     "request": "^2.40.0"
   },
   "devDependencies": {
-    "mocha": "^5.0.0"
+    "mocha": "5.1.1"
   }
 }