diff --git a/xep.ent b/xep.ent
index 940e702d..6370febc 100644
--- a/xep.ent
+++ b/xep.ent
@@ -1092,3 +1092,4 @@ IANA Service Location Protocol, Version 2 (SLPv2) Templates</link></span> <note>
 <!ENTITY xep0260 "<span class='ref'><link url='http://xmpp.org/extensions/xep-0260.html'>Jingle SOCKS5 Bytestreams Transport Method</link></span> <note>XEP-0260: Jingle SOCKS5 Bytestreams Transport Method &lt;<link url='http://xmpp.org/extensions/xep-0260.html'>http://xmpp.org/extensions/xep-0260.html</link>&gt;.</note>" >
 <!ENTITY xep0261 "<span class='ref'><link url='http://xmpp.org/extensions/xep-0261.html'>Jingle In-Band Bytestreams Transport Method</link></span> <note>XEP-0261: Jingle In-Band Bytestreams Transport Method &lt;<link url='http://xmpp.org/extensions/xep-0261.html'>http://xmpp.org/extensions/xep-0261.html</link>&gt;.</note>" >
 <!ENTITY xep0262 "<span class='ref'><link url='http://xmpp.org/extensions/xep-0262.html'>Use of ZRTP in Jingle RTP Sessions</link></span> <note>XEP-0262: Use of ZRTP in Jingle RTP Sessions &lt;<link url='http://xmpp.org/extensions/xep-0262.html'>http://xmpp.org/extensions/xep-0262.html</link>&gt;.</note>" >
+<!ENTITY xep0263 "<span class='ref'><link url='http://xmpp.org/extensions/xep-0263.html'>ECO-XMPP</link></span> <note>XEP-0263: ECO-XMPP &lt;<link url='http://xmpp.org/extensions/xep-0263.html'>http://xmpp.org/extensions/xep-0263.html</link>&gt;.</note>" >