diff --git a/CHANGELOG.md b/CHANGELOG.md
index b07b887..b8d142b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,21 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
+## 2.0.0 (November 11, 2022)
+
+### Removed
+
+- Drop support for Python 3.6. (Pull #55)
+
+### Added
+
+- Add official support for Python 3.11. (Pull #55)
+- Add official support for Python 3.9 and 3.10. (Pull #46 - Thanks @euri10)
+
+### Fixed
+
+- Ensure compatibility with mypy 0.980+, which made `no_implicit_optional` the default. (Pull #53 - Thanks @AllSeeingEyeTolledEweSew)
+
 ## 1.0.1 (June 8, 2020)
 
 ### Fixed
@@ -19,7 +34,6 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 ### Fixed
 
 - Use `sniffio` for auto-detecting the async environment. (Pull #28)
-
 - Enforce 100% test coverage on CI. (Pull #29)
 
 ### Changed
diff --git a/src/asgi_lifespan/__init__.py b/src/asgi_lifespan/__init__.py
index f715fc0..0c2627f 100644
--- a/src/asgi_lifespan/__init__.py
+++ b/src/asgi_lifespan/__init__.py
@@ -1,7 +1,7 @@
 from ._exceptions import LifespanNotSupported
 from ._manager import LifespanManager
 
-__version__ = "1.0.1"
+__version__ = "2.0.0"
 
 __all__ = [
     "__version__",
diff --git a/src/asgi_lifespan/__version__.py b/src/asgi_lifespan/__version__.py
deleted file mode 100644
index 5c4105c..0000000
--- a/src/asgi_lifespan/__version__.py
+++ /dev/null
@@ -1 +0,0 @@
-__version__ = "1.0.1"