diff --git a/CHANGELOG.md b/CHANGELOG.md
index a35ae06..8be3cd5 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,18 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [4.0.0] - 2023-08-28
+### Added
+- ASPE support
+- Rome linting and formatting
+- API v3
+### Changed
+- Updated doipjs to 1.0.0
+### Fixed
+- Missing primaryUserIndex
+### Removed
+- API v0, v1, v2
+
 ## [3.6.4] - 2023-03-27
 ### Fixed
 - Missing /graphql proxy API endpoint
diff --git a/package.json b/package.json
index 3a5d0bb..4a9c462 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "keyoxide-web",
-  "version": "3.6.4",
+  "version": "4.0.0",
   "description": "Verifying online identity with cryptography",
   "main": "./src/index.js",
   "type": "module",