diff --git a/ChangeLog.md b/ChangeLog.md
index 168ff55..7d2ca4f 100644
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -6,7 +6,7 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
 and the format of this file is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 
-## [Unreleased]
+## [0.12.0] - 2024-10-21
 
 ### Added
 - Accept session_factory in `ClientBase.__init__`.
@@ -39,7 +39,7 @@ and the format of this file is based on [Keep a Changelog](https://keepachangelo
 - Support response envelope objects to allow returning headers together with the body model.
 
 
-## [0.9.1](/~https://github.com/python-lapidary/lapidary/releases/tag/v0.9.1) - 2024-05-25
+## [0.9.1] - 2024-05-25
 ### Fixed
 - Moved pytest-asyncio dependency to dev group.
 
@@ -99,6 +99,8 @@ and the format of this file is based on [Keep a Changelog](https://keepachangelo
 ### Fixed
 - Dynamically creating generic types
 
-[unreleased]: /~https://github.com/python-lapidary/lapidary/compare/v0.11.0...HEAD
+[unreleased]: /~https://github.com/python-lapidary/lapidary/compare/v0.12.0...HEAD
+[0.12.0]: /~https://github.com/python-lapidary/lapidary/compare/v0.11.0...v0.12.0
 [0.11.0]: /~https://github.com/python-lapidary/lapidary/compare/v0.10.0...v0.11.0
 [0.10.0]: /~https://github.com/python-lapidary/lapidary/compare/v0.9.1...v0.10.0
+[0.9.1]: /~https://github.com/python-lapidary/lapidary/compare/v0.9.0...v0.9.1
diff --git a/pyproject.toml b/pyproject.toml
index b61b2c3..21908d3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "lapidary"
-version = "0.11.0"
+version = "0.12.0"
 description = "Python async OpenAPI client library"
 authors = ["Raphael Krupinski <rafalkrupinski@users.noreply.github.com>"]
 license = "MIT"