diff --git a/README.md b/README.md
index 655dc50db..dbfc674eb 100644
--- a/README.md
+++ b/README.md
@@ -47,13 +47,14 @@ support these extensions; therefore to get the most out of Conversations you
 should consider either switching to an XMPP server that does or — even better —
 run your own XMPP server for you and your friends. These XEP's are:
 
-* [XEP-0065: SOCKS5 Bytestreams](http://xmpp.org/extensions/xep-0065.html) (or mod_proxy65). Will be used to transfer
+* [XEP-0065: SOCKS5 Bytestreams](http://xmpp.org/extensions/xep-0065.html) will be used to transfer
   files if both parties are behind a firewall (NAT).
 * [XEP-0163: Personal Eventing Protocol](http://xmpp.org/extensions/xep-0163.html) for avatars and OMEMO.
 * [XEP-0191: Blocking command](http://xmpp.org/extensions/xep-0191.html) lets you blacklist spammers or block contacts
   without removing them from your roster.
 * [XEP-0198: Stream Management](http://xmpp.org/extensions/xep-0198.html) allows XMPP to survive small network outages and
   changes of the underlying TCP connection.
+* [XEP-0215: External Service Discovery](https://xmpp.org/extensions/xep-0215.html) will be used to discover STUN and TURN servers which facilitate P2P A/V calls.
 * [XEP-0280: Message Carbons](http://xmpp.org/extensions/xep-0280.html) which automatically syncs the messages you send to
   your desktop client and thus allows you to switch seamlessly from your mobile
   client to your desktop client and back within one conversation.