diff --git a/package.json b/package.json
index 30dc1f5..d178176 100644
--- a/package.json
+++ b/package.json
@@ -33,7 +33,7 @@
   "devDependencies": {
     "assume": "1.4.x",
     "istanbul": "0.4.x",
-    "mocha": "2.4.x",
+    "mocha": "~3.1.2",
     "pre-commit": "1.1.x"
   }
 }