diff --git a/CHANGELOG.md b/CHANGELOG.md
index 53e942f..0e3c0f9 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,14 @@
 # CHANGELOG
 
 
+## v0.4.2 (2026-08-20)
+
+### Bug Fixes
+
+- Round kev energy
+  ([`b299247`](https://gitea.psi.ch/mx/AareCommon/commit/b2992471ce64235613a014c5edf9ee5f7b1f7643))
+
+
 ## v0.4.1 (2026-08-19)
 
 ### Bug Fixes
diff --git a/pyproject.toml b/pyproject.toml
index 829a9c5..344fd5b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "aarecommon"
-version = "0.4.1"
+version = "0.4.2"
 description = "Common components (models, calculations) for Aare packages"
 readme = "README.md"
 requires-python = ">=3.11"