diff --git a/xep.ent b/xep.ent
index c9d060ae..e59ff764 100644
--- a/xep.ent
+++ b/xep.ent
@@ -550,6 +550,7 @@ THE SOFTWARE.
 <!ENTITY rfc5056 "<span class='ref'><link url='http://tools.ietf.org/html/rfc5056'>RFC 5056</link></span> <note>RFC 5056: On the Use of Channel Bindings to Secure Channels &lt;<link url='http://tools.ietf.org/html/rfc5056'>http://tools.ietf.org/html/rfc5056</link>&gt;.</note>" >
 <!ENTITY rfc5081 "<span class='ref'><link url='http://tools.ietf.org/html/rfc5081'>RFC 5081</link></span> <note>RFC 5081: Using OpenPGP Keys for Transport Layer Security (TLS) Authentication &lt;<link url='http://tools.ietf.org/html/rfc5081'>http://tools.ietf.org/html/rfc5081</link>&gt;.</note>" >
 <!ENTITY rfc5122 "<span class='ref'><link url='http://tools.ietf.org/html/rfc5122'>RFC 5122</link></span> <note>RFC 5122: Internationalized Resource Identifiers (IRIs) and Uniform Resource Identifiers (URIs) for the Extensible Messaging and Presence Protocol (XMPP) &lt;<link url='http://tools.ietf.org/html/rfc5122'>http://tools.ietf.org/html/rfc5122</link>&gt;.</note>" >
+<!ENTITY rfc5246 "<span class='ref'><link url='http://tools.ietf.org/html/rfc5246'>RFC 5246</link></span> <note>RFC 5246: The Transport Layer Security (TLS) Protocol Version 1.2 &lt;<link url='http://tools.ietf.org/html/rfc5246'>http://tools.ietf.org/html/rfc5246</link>&gt;.</note>" >
 <!ENTITY rfc5389 "<span class='ref'><link url='http://tools.ietf.org/html/rfc5389'>RFC 5389</link></span> <note>RFC 5389: Session Traversal Utilities for NAT (STUN) &lt;<link url='http://tools.ietf.org/html/rfc5389'>http://tools.ietf.org/html/rfc5389</link>&gt;.</note>" >
 <!ENTITY rfc5391 "<span class='ref'><link url='http://tools.ietf.org/html/rfc5391'>RFC 5391</link></span> <note>RFC 5391: RTP Payload Format for ITU-T Recommendation G.711.1 &lt;<link url='http://tools.ietf.org/html/rfc5391'>http://tools.ietf.org/html/rfc5391</link>&gt;.</note>" >