diff --git a/CHANGELOG.md b/CHANGELOG.md
index b07741544..0c47a9c0c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,7 +6,7 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/)
 and this project adheres to [Semantic Versioning](http://semver.org/).
 
 
-## [0.12.0] - Unreleased
+## [0.12.0] - 2023-02-24
 
 ### Added
 
@@ -500,6 +500,7 @@ https://textual.textualize.io/blog/2022/11/08/version-040/#version-040
 - New handler system for messages that doesn't require inheritance
 - Improved traceback handling
 
+[0.12.0]: https://github.com/Textualize/textual/compare/v0.11.1...v0.12.0
 [0.11.1]: https://github.com/Textualize/textual/compare/v0.11.0...v0.11.1
 [0.11.0]: https://github.com/Textualize/textual/compare/v0.10.1...v0.11.0
 [0.10.1]: https://github.com/Textualize/textual/compare/v0.10.0...v0.10.1
diff --git a/pyproject.toml b/pyproject.toml
index 17ac3c8b1..97694cc23 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "textual"
-version = "0.11.1"
+version = "0.12.0"
 homepage = "https://github.com/Textualize/textual"
 description = "Modern Text User Interface framework"
 authors = ["Will McGugan <will@textualize.io>"]
diff --git a/src/textual/dom.py b/src/textual/dom.py
index 55ff4ffd6..9980c9471 100644
--- a/src/textual/dom.py
+++ b/src/textual/dom.py
@@ -39,7 +39,6 @@ from .walk import walk_breadth_first, walk_depth_first
 
 if TYPE_CHECKING:
     from .app import App
-    from .messages import Message
     from .css.query import DOMQuery
     from .screen import Screen
     from .widget import Widget