Update CHANGELOG.md

Author: felixhekhorn

CHANGELOG.md

@@ -4,11 +4,18 @@ 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).
 
-## [Unreleased](https://github.com/NNPDF/pinefarm/compare/v0.4.0...HEAD)
+## [Unreleased](https://github.com/NNPDF/pinefarm/compare/v0.4.1...HEAD)
+
+## [0.4.1](https://github.com/NNPDF/pinefarm/compare/v0.4.0...v0.4.1) - 2026-02-24
+
+### Changed
+
+- Allow Positivity to have multiple Q2 ([#117](https://github.com/NNPDF/pinefarm/pull/117))
+- Drop support for Python 3.9
 
 ### Fixed
 
-- Fixed the computations of heavy coefficient functions coming from Yadism
+- Update yadism to v0.13.10 (which fixes the computations of heavy coefficient functions)
 
 ## [0.4.0](https://github.com/NNPDF/pinefarm/compare/v0.3.3...v0.4.0) - 2025-10-29