Update CHANGELOG

Author: josevalim

CHANGELOG.md

@@ -1,13 +1,19 @@
 # Changelog
 
-## v1.21.0
+## v1.21.0-dev
 
 ### Enhancements
 
   * [Plug.Router] Add the `query/3` macro for routing HTTP QUERY (RFC 10008) requests
   * [Plug.Parsers] Parse request bodies for the HTTP QUERY method (RFC 10008)
   * [Plug.CSRFProtection] Treat the safe, idempotent HTTP QUERY method (RFC 10008) as unprotected
 
+## v1.20.2 (2026-06-30)
+
+### Bug fixes
+
+  * [Plug.Conn] Set state to `:set_upgrade` and status to 101 when running `before_send` callbacks for upgrades
+
 ## v1.20.1 (2026-06-23)
 
 ### Bug fixes

mix.exs

@@ -1,7 +1,7 @@
 defmodule Plug.MixProject do
   use Mix.Project
 
-  @version "1.20.1"
+  @version "1.21.0-dev"
   @description "Compose web applications with functions"
   @xref_exclude [Plug.Cowboy, :ssl]
   @source_url "https://github.com/elixir-plug/plug"