diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4abe27a..f6cabd9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 # Changelog
 
-## Unreleased
+## v0.4.0 (2026-01-27)
 
 ### Added
 
diff --git a/setup.py b/setup.py
index d8778cc..6ca58ef 100644
--- a/setup.py
+++ b/setup.py
@@ -2,7 +2,7 @@
 
 from setuptools import setup, find_packages
 
-VERSION = "v0.3.0"
+VERSION = "v0.4.0"
 
 LONG_DESCRIPTION = """
 This package contains a [Sphinx](http://www.sphinx-doc.org/en/master/) extension