diff --git a/.bumpversion.toml b/.bumpversion.toml
index 5ce40de..d978406 100644
--- a/.bumpversion.toml
+++ b/.bumpversion.toml
@@ -1,5 +1,5 @@
 [tool.bumpversion]
-current_version = "0.3.22"
+current_version = "0.3.23"
 parse = "(?P<major>\\d+)\\.(?P<minor>\\d+)\\.(?P<patch>\\d+)"
 serialize = ["{major}.{minor}.{patch}"]
 search = "{current_version}"
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1f77ff0..54890c7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Changelog
 
+## [0.3.23] - 2026-09-07
+
+### Changed
+
+- Fix(deps): silence polars explode() empty_as_null deprecation warnings
+
+- Feat(ci): add scheduled dependency-bump workflows (Renovate-lite)
+
 ## [0.3.22] - 2026-09-07
 
 ### Changed
diff --git a/README.md b/README.md
index cada6ad..5fff0f1 100644
--- a/README.md
+++ b/README.md
@@ -10,8 +10,8 @@ calorimeter showers.
 
 [![python](https://img.shields.io/badge/python-3.12%2B-3776AB?logo=python&logoColor=white)](pyproject.toml)
 [![torch](https://img.shields.io/badge/torch-2.3.x-EE4C2C?logo=pytorch&logoColor=white)](pyproject.toml)
-[![version](https://img.shields.io/badge/version-0.3.22-informational)](CHANGELOG.md)
-[![tests](https://img.shields.io/badge/tests-1167%20passing-brightgreen)](tests/)
+[![version](https://img.shields.io/badge/version-0.3.23-informational)](CHANGELOG.md)
+[![tests](https://img.shields.io/badge/tests-1176%20passing-brightgreen)](tests/)
 [![CI](https://git.larsbogner.de/lars/giant/actions/workflows/ci.yml/badge.svg?branch=master)](https://git.larsbogner.de/lars/giant/actions)
 [![license](https://img.shields.io/badge/license-unlicensed-lightgrey)](#license)
 
diff --git a/pyproject.toml b/pyproject.toml
index 09ac5c1..32454aa 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "giant"
-version = "0.3.22"
+version = "0.3.23"
 description = "Geant4 step-function surrogate via conditional flow matching"
 readme = "README.md"
 requires-python = ">=3.12"
diff --git a/uv.lock b/uv.lock
index 5e901ad..773d1ec 100644
--- a/uv.lock
+++ b/uv.lock
@@ -825,7 +825,7 @@ wheels = [
 
 [[package]]
 name = "giant"
-version = "0.3.22"
+version = "0.3.23"
 source = { editable = "." }
 dependencies = [
     { name = "numpy" },