diff --git a/xep.ent b/xep.ent
index d91c09e7..1acb4763 100644
--- a/xep.ent
+++ b/xep.ent
@@ -666,6 +666,7 @@ THE SOFTWARE.
 <!ENTITY rfc7081 "<span class='ref'><link url='http://tools.ietf.org/html/rfc7081'>RFC 7081</link></span> <note>RFC 7081: CUSAX: Combined Use of the Session Initiation Protocol (SIP) and the Extensible Messaging and Presence Protocol (XMPP) &lt;<link url='http://tools.ietf.org/html/rfc7081'>http://tools.ietf.org/html/rfc7081</link>&gt;.</note>" >
 <!ENTITY rfc7519 "<span class='ref'><link url='http://tools.ietf.org/html/rfc7519'>RFC 7519</link></span> <note>RFC 7519: JSON Web Token (JWT) &lt;<link url='http://tools.ietf.org/html/rfc7519'>http://tools.ietf.org/html/rfc7519</link>&gt;.</note>" >
 <!ENTITY rfc7572 "<span class='ref'><link url='http://tools.ietf.org/html/rfc7572'>RFC 7572</link></span> <note>RFC 7572: Interworking between the Session Initiation Protocol (SIP) and the Extensible Messaging and Presence Protocol (XMPP): Instant Messaging &lt;<link url='http://tools.ietf.org/html/rfc7572'>http://tools.ietf.org/html/rfc7572</link>&gt;.</note>" >
+<!ENTITY rfc7590 "<span class='ref'><link url='http://tools.ietf.org/html/rfc7590'>RFC 7590</link></span> <note>RFC 7590: Use of Transport Layer Security (TLS) in the Extensible Messaging and Presence Protocol (XMPP) &lt;<link url='http://tools.ietf.org/html/rfc7590'>http://tools.ietf.org/html/rfc7590</link>&gt;.</note>" >
 <!ENTITY rfc7595 "<span class='ref'><link url='http://tools.ietf.org/html/rfc7595'>RFC 7595</link></span> <note>RFC 7595: Guidelines and Registration Procedures for URI Schemes &lt;<link url='http://tools.ietf.org/html/rfc7595'>http://tools.ietf.org/html/rfc7595</link>&gt;.</note>" >
 <!ENTITY rfc7613 "<span class='ref'><link url='http://tools.ietf.org/html/rfc7613'>RFC 7613</link></span> <note>RFC 7613: Preparation, Enforcement, and Comparison of Internationalized Strings Representing Usernames and Passwords&lt;<link url='http://tools.ietf.org/html/rfc7613'>http://tools.ietf.org/html/rfc7613</link>&gt;.</note>" >
 <!ENTITY rfc7622 "<span class='ref'><link url='http://tools.ietf.org/html/rfc7622'>RFC 7622</link></span> <note>RFC 7622: Extensible Messaging and Presence Protocol (XMPP): Address Format &lt;<link url='http://tools.ietf.org/html/rfc7622'>http://tools.ietf.org/html/rfc7622</link>&gt;.</note>" >