diff --git a/package.json b/package.json
index e99b4ec..1d323c9 100644
--- a/package.json
+++ b/package.json
@@ -13,6 +13,6 @@
     "node": ">=0.6"
   },
   "dependencies": {
-    "coffee-script": ""
+    "coffee-script": "1.6.x"
   }
 }