diff --git a/nix/sources.json b/nix/sources.json

index 4f19ddfc52fff8e84b4e8ec540602100fc035795..ccd79832cc1ff529b6934791b4680b1da2f809b2 100644

--- a/nix/sources.json

+++ b/nix/sources.json

@@ -361,6 +361,7 @@ "url_template": "https://github.com///archive/.tar.gz"

 },

 "morse-talk": {

     "branch": "master",

•    "builtin": false,
  

     "description": "A Python library written for Morse Code",

     "homepage": "https://github.com/morse-talk/morse-talk",

     "owner": "morse-talk",