diff --git a/package.json b/package.json
index 2dffb49..4a24d02 100644
--- a/package.json
+++ b/package.json
@@ -32,7 +32,8 @@
     "binary": "=0.3.0",
     "step": "=0.0.4",
     "buffers": "=0.1.1",
-    "buffertools": "=1.1.1"
+    "buffertools": "=1.1.1",
+    "mocha": ">=1.15.1"
   },
   "devDependencies": {},
   "license": "MIT"