diff --git a/docs/u_e-mailcow_ui-tfa.md b/docs/u_e-mailcow_ui-tfa.md
index 403bd8daa..a9c5b370b 100644
--- a/docs/u_e-mailcow_ui-tfa.md
+++ b/docs/u_e-mailcow_ui-tfa.md
@@ -18,7 +18,7 @@ The API ID, API key and the first 12 characters (your YubiKeys ID in modhex) are
 ### U2F
 
 Only Google Chrome (+derivatives) and Opera support U2F authentication to this day natively.
-For Firefox you will need to install the "U2F Support Add-on" as provided on [mozilla.org](https://addons.mozilla.org/en-US/firefox/addon/u2f-support-add-on/).
+Since version 67 Mozilla Firefox can handle U2F natively. ([Source](https://support.yubico.com/support/solutions/articles/15000017511-enabling-u2f-support-in-mozilla-firefox))
 
 U2F works without an internet connection.