diff --git a/registry.json b/registry.json
index e2c4347..5b2b767 100644
--- a/registry.json
+++ b/registry.json
@@ -43,7 +43,6 @@
   "nprogress": "github:rstacruz/nprogress",
   "parallax": "github:wagerfield/parallax",
   "pikaday": "github:dbushell/Pikaday",
-  "prototype": "github:sstephenson/prototype",
   "ratchet": "github:maker/ratchet",
   "raphael": "github:DmitryBaranovskiy/raphael",
   "respond": "github:scottjehl/Respond",