diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 18cac80..fd1c548 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.3.4"
+  ".": "0.3.5"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 14e646c..efeb5dd 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,23 @@ 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).
 
+## [0.3.5](https://github.com/weklund/mlx-stack/compare/v0.3.4...v0.3.5) (2026-04-04)
+
+
+### Features
+
+* expand ruff lint rules with tier 1+2 quality rulesets ([#22](https://github.com/weklund/mlx-stack/issues/22)) ([75490f6](https://github.com/weklund/mlx-stack/commit/75490f6817a87a6b63818fa1f7c1660e59766ba3))
+
+
+### Refactors
+
+* **tests:** replace brittle mock-heavy tests with behavioral tests and shared factories ([#32](https://github.com/weklund/mlx-stack/issues/32)) ([9af6078](https://github.com/weklund/mlx-stack/commit/9af60781e14c1466219ee2644928db9c9a39041e))
+  - `FakeServiceLayer` replaces 10-deep `@patch` stacks in `TestRunUp`
+  - Consolidate ~50 duplicate helpers into `tests/factories.py`
+  - AAA comments (`# Arrange`, `# Act`, `# Assert`) across 17 test files
+  - `make lint` now includes pyright for shift-left type checking
+  - Net: -577 lines, 1,481 tests pass, 73% reduction in `@patch` usage
+
 ## [0.3.4](https://github.com/weklund/mlx-stack/compare/v0.3.3...v0.3.4) (2026-04-03)