diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9ec82729..986d82fc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,14 @@
 # CHANGELOG
 
 
+## v3.40.1 (2026-10-15)
+
+### Bug Fixes
+
+- **ophyd_validation**: Shut down the validation thread pool on cleanup
+  ([`592323c`](https://github.com/bec-project/bec_widgets/commit/592323c5756122acac218f5c348feea1d7ed1f3e))
+
+
 ## v3.40.0 (2026-10-15)
 
 ### Bug Fixes
diff --git a/pyproject.toml b/pyproject.toml
index 09744cf1..1b16fd6f 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "bec_widgets"
-version = "3.40.0"
+version = "3.40.1"
 description = "BEC Widgets"
 requires-python = ">=3.11"
 classifiers = [