diff --git a/package.json b/package.json
index bf3d380..1d82a43 100644
--- a/package.json
+++ b/package.json
@@ -6,6 +6,7 @@
         "test": "test"
     },
     "dependencies": {
+        "coffee-script": "~1.6.3"
         "async": "~0.2.9",
         "proxyquire": "~0.4.1"
     },