diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1378d0da..1312dae7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,7 +5,7 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [Unreleased]
+## [6.0.0] - 2026-03-16
 
 ### Changed
 
diff --git a/lib/http/version.rb b/lib/http/version.rb
index 1673a6da..fc0ea7e0 100644
--- a/lib/http/version.rb
+++ b/lib/http/version.rb
@@ -2,5 +2,5 @@
 
 module HTTP
   # Current library version
-  VERSION = "5.2.0"
+  VERSION = "6.0.0"
 end