diff --git a/CHANGES.rst b/CHANGES.rst
index 77c707a..be5e104 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,11 +1,14 @@
 Changes
 =======
 
-Unreleased  (???)
+40.0 (2023-06-16)
 -----------------
 
-* Test against Python 3.11, update listed support in classifiers
-* Drop support for Python 3.7
+* Add CLI option to render package README. (#271)
+* Adapt tests to pygments 2.14.0 (#272)
+* Update release process to use Trusted Publishing (#276)
+* Replace usage of deprecated `pkg_resources` with `importlib.metadata` (#281)
+* Drop support for Python 3.7 (#282), Test against Python 3.11 (#280)
 
 37.3 (2022-10-31)
 -----------------
diff --git a/readme_renderer/__about__.py b/readme_renderer/__about__.py
index e20bf42..8f66c15 100644
--- a/readme_renderer/__about__.py
+++ b/readme_renderer/__about__.py
@@ -29,7 +29,7 @@
 )
 __uri__ = "https://github.com/pypa/readme_renderer"
 
-__version__ = "37.4.dev"
+__version__ = "40.0"
 
 __author__ = "The Python Packaging Authority"
 __email__ = "admin@mail.pypi.org"