diff --git a/registry.json b/registry.json
index 6ffed53..1c8f79b 100644
--- a/registry.json
+++ b/registry.json
@@ -48,8 +48,8 @@
   "backbone": "npm:backbone",
   "backbone.babysitter": "github:marionettejs/backbone.babysitter",
   "backbone.wreqr": "github:marionettejs/backbone.wreqr",
-  "big.js": "github:MikeMcl/big.js",
-  "bignumber.js": "github:MikeMcl/bignumber.js",
+  "big.js": "npm:big.js",
+  "bignumber.js": "npm:bignumber.js",
   "bootstrap": "github:twbs/bootstrap",
   "buffer": "github:jspm/nodelibs-buffer",
   "chart": "github:nnnick/Chart.js",