diff --git a/README.md b/README.md
index fbb9db02..04eb9f92 100644
--- a/README.md
+++ b/README.md
@@ -5,6 +5,12 @@
 [![Go Report Card](https://goreportcard.com/badge/github.com/aler9/gortsplib)](https://goreportcard.com/report/github.com/aler9/gortsplib)
 [![Build Status](https://travis-ci.org/aler9/gortsplib.svg?branch=master)](https://travis-ci.org/aler9/gortsplib)
 
-RTSP primitives for the Go programming language.
+RTSP 1.0 primitives for the Go programming language.
 
 See [rtsp-simple-server](https://github.com/aler9/rtsp-simple-server) and [rtsp-simple-proxy](https://github.com/aler9/rtsp-simple-proxy) for examples on how to use this library.
+
+## Links
+
+IETF Standard
+* (1.0) https://tools.ietf.org/html/rfc2326
+* (2.0) https://tools.ietf.org/html/rfc7826
diff --git a/request.go b/request.go
index 19599b2c..a5eacf2c 100644
--- a/request.go
+++ b/request.go
@@ -15,16 +15,18 @@ const (
 type Method string
 
 const (
-	OPTIONS       Method = "OPTIONS"
+	ANNOUNCE      Method = "ANNOUNCE"
 	DESCRIBE      Method = "DESCRIBE"
-	SETUP         Method = "SETUP"
+	GET_PARAMETER Method = "GET_PARAMETER"
+	OPTIONS       Method = "OPTIONS"
+	PAUSE         Method = "PAUSE"
 	PLAY          Method = "PLAY"
 	PLAY_NOTIFY   Method = "PLAY_NOTIFY"
-	PAUSE         Method = "PAUSE"
-	TEARDOWN      Method = "TEARDOWN"
-	GET_PARAMETER Method = "GET_PARAMETER"
-	SET_PARAMETER Method = "SET_PARAMETER"
+	RECORD        Method = "RECORD"
 	REDIRECT      Method = "REDIRECT"
+	SETUP         Method = "SETUP"
+	SET_PARAMETER Method = "SET_PARAMETER"
+	TEARDOWN      Method = "TEARDOWN"
 )
 
 // Request is a RTSP request.