diff --git a/package.json b/package.json
index bbe543a..4eed208 100644
--- a/package.json
+++ b/package.json
@@ -42,7 +42,7 @@
   "devDependencies": {
     "chai": "3.3.0",
     "eslint": "1.5.0",
-    "mocha": "^2.1.0",
+    "mocha": "2.3.3",
     "zuul": "^2.1.1"
   },
   "spm": {