diff --git a/CHANGELOG.md b/CHANGELOG.md
index a487481..49c2033 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,7 +3,7 @@
 All notable changes to **agentcairn** are documented here.
 Format: [Keep a Changelog](https://keepachangelog.com/en/1.1.0/); versioning: [SemVer](https://semver.org/).
 
-## [Unreleased]
+## [0.23.0] - 2026-06-29
 
 ### Added
 - **Automatic per-turn recall on Claude Code.** A `UserPromptSubmit` hook runs a
diff --git a/src/cairn/__init__.py b/src/cairn/__init__.py
index 3774d8e..8677dee 100644
--- a/src/cairn/__init__.py
+++ b/src/cairn/__init__.py
@@ -1,4 +1,4 @@
 # SPDX-License-Identifier: Apache-2.0
 """agentcairn — local-first agent memory (import package `cairn`)."""
 
-__version__ = "0.22.1"
+__version__ = "0.23.0"