You can get an overview of all the repositories you are watching in order to remove any you're no longer interested in.

  1. In the upper-right corner of any page, click . If you've disabled web notifications and you don't see the bell icon, you can navigate to https://github.com/watching. Notification indicating any unread message
  2. Click Watching. Listing of watched repositories
  3. Click Unwatch next to any repository to immediately unwatch it.

Further reading