diff --git a/package.json b/package.json
index afca0cc..ce18a1f 100644
--- a/package.json
+++ b/package.json
@@ -13,7 +13,7 @@
   },
   "dependencies": {},
   "devDependencies": {
-    "mocha": "*",
+    "mocha": "2.4.4",
     "chai": "*",
     "folio": "0.3.x"
   },