diff --git a/CHANGELOG.md b/CHANGELOG.md
index 31310f05..f12f1db8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,14 @@
 # CHANGELOG
 
 
+## v0.21.1 (2026-09-02)
+
+### Bug Fixes
+
+- Truncate chi metadata at 0
+  ([`386e301`](https://gitea.psi.ch/mx/AareDAQ/commit/386e301dde192b91be4103f72b278a3ff594d426))
+
+
 ## v0.21.0 (2026-09-02)
 
 ### Code Style
diff --git a/pyproject.toml b/pyproject.toml
index a22c6b29..d8676cae 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "aaredaq"
-version = "0.21.0"
+version = "0.21.1"
 description = "AareDAQ (with GUI)"
 readme = "README.md"
 requires-python = ">=3.11"