diff --git a/Advanced-Users.md b/Advanced-Users.md
index da9f43d..52d0237 100644
--- a/Advanced-Users.md
+++ b/Advanced-Users.md
@@ -1,3 +1,5 @@
+<sup>Credit: The following content is reproduced and adapted from the [pyllyukko](https://github.com/pyllyukko/user.js?tab=readme-ov-file#installation) project.</sup>
+
 ## Download
 
 Different download methods are available:
@@ -10,7 +12,7 @@ Different download methods are available:
 
 ### Backups
 
-Do note that these settings alter your browser behaviour quite a bit, so it is recommended to either create a completely new [profile](https://support.mozilla.org/en-US/kb/profiles-where-firefox-stores-user-data) for Firefox or backup your existing [profile directory](http://kb.mozillazine.org/Profile_folder_-_Firefox) before putting the `user.js` file in place.
+Do note that these settings alter your browser behavior quite a bit, so it is recommended to either create a completely new [profile](https://support.mozilla.org/en-US/kb/profiles-where-firefox-stores-user-data) for Firefox or backup your existing [profile directory](http://kb.mozillazine.org/Profile_folder_-_Firefox) before putting the `user.js` file in place.
 
 To enable the Profile Manager, run Firefox with [command-line arguments](http://kb.mozillazine.org/Command_line_arguments): `firefox --no-remote -P`