diff --git a/catgirl.1 b/catgirl.1
index 84ed857..969c1cc 100644
--- a/catgirl.1
+++ b/catgirl.1
@@ -388,6 +388,11 @@ usually the client IP address.
 .Dl catgirl -h ascii.town -j '&town'
 .
 .Sh STANDARDS
+.Nm
+is a partial implementation of the following:
+.
+.Bl -item
+.It
 .Rs
 .%A C. Kalt
 .%T Internet Relay Chat: Client Protocol
@@ -397,6 +402,49 @@ usually the client IP address.
 .%U https://tools.ietf.org/html/rfc2812
 .Re
 .
+.It
+.Rs
+.%A Kevin L. Mitchell
+.%A Perry Lorier
+.%A Lee Hardy
+.%A William Pitcock
+.%T IRCv3.1 Client Capability Negotiation
+.%I IRCv3 Working Group
+.%U https://ircv3.net/specs/core/capability-negotiation-3.1.html
+.Re
+.
+.It
+.Rs
+.%A Jilles Tjoelker
+.%A William Pitcock
+.%T IRCv3.1 SASL Authentication
+.%I IRCv3 Working Group
+.%U https://ircv3.net/specs/extensions/sasl-3.1.html
+.Re
+.
+.It
+.Rs
+.%A K. Zeilenga, Ed.
+.%Q OpenLDAP Foundation
+.%T The PLAIN Simple Authentication and Security Layer (SASL) Mechanism
+.%I IETF
+.%N RFC 4616
+.%D August 2006
+.%U https://tools.ietf.org/html/rfc4616
+.Re
+.
+.It
+.Rs
+.%A S. Josefsson
+.%Q SJD
+.%T The Base16, Base32, and Base64 Data Encodings
+.%I IETF
+.%N RFC 4648
+.%D October 2006
+.%U https://tools.ietf.org/html/rfc4648
+.Re
+.El
+.
 .Sh CAVEATS
 .Nm
 does not support unencrypted connections.