diff --git a/lib/rackup/version.rb b/lib/rackup/version.rb
index a23c87d..fcf6fc9 100644
--- a/lib/rackup/version.rb
+++ b/lib/rackup/version.rb
@@ -4,5 +4,5 @@
 # Copyright, 2022-2023, by Samuel Williams.
 
 module Rackup
-  VERSION = "2.1.0"
+  VERSION = "2.2.0"
 end
diff --git a/releases.md b/releases.md
index 50d6ccc..a6bed88 100644
--- a/releases.md
+++ b/releases.md
@@ -2,6 +2,6 @@
 
 All notable changes to this project will be documented in this file. For info on how to format all future additions to this file please reference [Keep A Changelog](https://keepachangelog.com/en/1.0.0/).
 
-## Unreleased
+## v2.2.0
 
-- Remove old rack shims.
+  - Remove old rack shims.