diff --git a/package.json b/package.json
index afd792f..94f6694 100644
--- a/package.json
+++ b/package.json
@@ -22,6 +22,6 @@
   "readmeFilename": "Readme.md",
   "devDependencies": {
     "istanbul": "^0.4.5",
-    "mocha": "^3.3.0"
+    "mocha": "^3.4.2"
   }
 }