diff --git a/package.json b/package.json
index 21701c7..31296a9 100644
--- a/package.json
+++ b/package.json
@@ -19,7 +19,7 @@
   "license": "MIT",
   "dependencies": {
     "accepts": "^1.1.0",
-    "co": "^4.0.2",
+    "co": "^4.1.0",
     "content-disposition": "~0.5.0",
     "cookies": "~0.5.0",
     "debug": "*",