diff --git a/CHANGELOG.md b/CHANGELOG.md
index e6a8ae7..7696245 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,7 +5,11 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## vX.X.X
+## v0.4.0
+
+This release adds support for defining the output path in the command line
+interface and addresses bugs around optional dependencies for
+`dask.distributed`.
 
 ### Added
 
diff --git a/pyproject.toml b/pyproject.toml
index ad8c668..beea7cd 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,9 +1,12 @@
 [project]
 name = "mllam-data-prep"
-version = "0.3.0"
+version = "0.4.0"
 description = "dataset preparation for data-driven weather models"
 authors = [
     {name = "Leif Denby", email = "lcd@dmi.dk"},
+    {name = "Hauke Schulz", email = "has@dmi.dk"},
+    {name = "Emy Alerskans", email = "ea@dmi.dk"},
+    {name = "Eleni Briola", email = "elb@dmi.dk"},
 ]
 dependencies = [
     "xarray>=2024.2.0",