diff --git a/README.md b/README.md
index 33ac047..330d31f 100644
--- a/README.md
+++ b/README.md
@@ -88,10 +88,12 @@ girc artwork licensed under [CC 3.0](http://creativecommons.org/licenses/by/3.0/
    * [IRCv3: Specification Docs](http://ircv3.net/irc/)
    * [IRCv3: Specification Repo](https://github.com/ircv3/ircv3-specifications)
    * [IRCv3 Capability Registry](http://ircv3.net/registry.html)
-   * [ISUPPORT Specification Docs](http://www.irc.org/tech_docs/005.html) ([alternative](http://defs.ircdocs.horse/defs/isupport.html)) ([relevant draft](http://www.irc.org/tech_docs/draft-brocklesby-irc-isupport-03.txt)) ([alternative](https://github.com/grawity/irc-docs/blob/master/client/RPL_ISUPPORT/draft-hardy-irc-isupport-00.txt))
+   * [ISUPPORT Specification Docs](http://www.irc.org/tech_docs/005.html) ([alternative 1](http://defs.ircdocs.horse/defs/isupport.html), [alternative 2](https://github.com/grawity/irc-docs/blob/master/client/RPL_ISUPPORT/draft-hardy-irc-isupport-00.txt), [relevant draft](http://www.irc.org/tech_docs/draft-brocklesby-irc-isupport-03.txt))
    * [IRC Numerics List](http://defs.ircdocs.horse/defs/numerics.html)
    * [Extended WHO (also known as WHOX)](https://github.com/quakenet/snircd/blob/master/doc/readme.who)
    * [RFC1459: Internet Relay Chat Protocol](https://tools.ietf.org/html/rfc1459)
    * [RFC2812: Internet Relay Chat: Client Protocol](https://tools.ietf.org/html/rfc2812)
    * [RFC2813: Internet Relay Chat: Server Protocol](https://tools.ietf.org/html/rfc2813)
    * [RFC7194: Default Port for Internet Relay Chat (IRC) via TLS/SSL](https://tools.ietf.org/html/rfc7194)
+   * [RFC4422: Simple Authentication and Security Layer](https://tools.ietf.org/html/rfc4422) ([SASL EXTERNAL](https://tools.ietf.org/html/rfc4422#appendix-A))
+   * [RFC4616: The PLAIN SASL Mechanism](https://tools.ietf.org/html/rfc4616)