diff --git a/package.json b/package.json
index 0c52269..b7e7978 100644
--- a/package.json
+++ b/package.json
@@ -13,7 +13,7 @@
     "accord": "0.26.0",
     "autoprefixer-stylus": "0.10.0",
     "chai": "3.5.0",
-    "coffee-script": "1.10.0",
+    "coffee-script": "1.11.0",
     "css-parse": "2.0.0",
     "mocha": "3.0.2",
     "stylus": "0.54.5"