diff --git a/package.json b/package.json
index 37e6fa9..1c6c93d 100644
--- a/package.json
+++ b/package.json
@@ -10,7 +10,7 @@
   },
   "devDependencies": {
     "istanbul": "0",
-    "mocha": "2"
+    "mocha": "^3.2.0"
   },
   "scripts": {
     "test": "mocha",