diff --git a/package.json b/package.json
index ed5a2d2..0f2017c 100644
--- a/package.json
+++ b/package.json
@@ -9,7 +9,7 @@
   },
   "devDependencies": {
     "chai": "3.5.0",
-    "coffee-script": "1.10.0",
+    "coffee-script": "1.11.0",
     "coveralls": "2.11.14",
     "css-parse": "2.0.0",
     "istanbul": "0.4.5",