diff --git a/CHANGELOG.md b/CHANGELOG.md
index e45f0fec..acca7b11 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,7 +1,18 @@
-CHANGELOG
+# CHANGELOG
+
+## v0.4.0 (2023-05-28)
+
+- Implemented complete Python API
+- Migrated to CMake for build
+- Migrated to GitHub Actions for CI
+- Introduced initial Windows support
+- Naming overhaul and standardisation
+- Added `AudioGraphConfig`, and support for loading config from file and environmental variables
+- Added multiple `Node` subclasses for spatial panning
+- Added `signalflow` command-line utility
+- Added `signalflow_midi` helper package
 
 ## [v0.3.1](https://github.com/ideoforms/signal/tree/v0.3.1) (2018-12-31)
-[Full Changelog](https://github.com/ideoforms/signal/compare/v0.3.0...v0.3.1)
 
 **New features:**
 
@@ -14,7 +25,6 @@ CHANGELOG
 - Monitor: Add support for multichannel monitoring [\#74](https://github.com/ideoforms/signal/issues/74)
 
 ## [v0.3.0](https://github.com/ideoforms/signal/tree/v0.3.0) (2018-07-15)
-[Full Changelog](https://github.com/ideoforms/signal/compare/v0.2.0...v0.3.0)
 
 **New features:**
 
@@ -37,7 +47,6 @@ CHANGELOG
 - Naming review [\#44](https://github.com/ideoforms/signal/issues/44)
 
 ## [v0.2.0](https://github.com/ideoforms/signal/tree/v0.2.0) (2016-04-17)
-[Full Changelog](https://github.com/ideoforms/signal/compare/v0.1.1...v0.2.0)
 
 **New features:**
 
@@ -69,7 +78,6 @@ CHANGELOG
 - Node: EQ [\#19](https://github.com/ideoforms/signal/issues/19)
 
 ## [v0.1.1](https://github.com/ideoforms/signal/tree/v0.1.1) (2016-03-23)
-[Full Changelog](https://github.com/ideoforms/signal/compare/v0.1.0...v0.1.1)
 
 **New features:**
 
@@ -101,4 +109,4 @@ CHANGELOG
 - Raspberry Pi support
 
 
-\* *This Change Log was automatically generated by [github_changelog_generator](https://github.com/skywinder/Github-Changelog-Generator)*
\ No newline at end of file
+\* *This Change Log was automatically generated by [github_changelog_generator](https://github.com/skywinder/Github-Changelog-Generator)*
diff --git a/setup.py b/setup.py
index 115d5e0b..a5b14be6 100644
--- a/setup.py
+++ b/setup.py
@@ -38,7 +38,7 @@ def build_extension(self, ext):
 
 setup(
     name='signalflow',
-    version='0.0.8',
+    version='0.4.0',
     author='Daniel Jones',
     author_email='dan@erase.net',
     description='signalflow',