diff --git a/CHANGELOG.md b/CHANGELOG.md
index e9f2887b..e3a39328 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,12 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](http://keepachangelog.com/).
 
+## [4.0.0] - 2019-09-23
+
+### Changed
+
+- [#514](https://github.com/dadi/cdn/pull/514): remove support for legacy path-based URL syntax
+
 ## [3.6.2] - 2019-08-23
 
 ### Fixed
diff --git a/package.json b/package.json
index 95036f85..a86dd089 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@dadi/cdn",
-  "version": "4.0.0-rc1",
+  "version": "4.0.0",
   "product": "DADI CDN",
   "description": "A high performance, just-in-time asset manipulation and delivery layer designed as a modern content distribution solution.",
   "scripts": {