diff --git a/CHANGELOG.md b/CHANGELOG.md
index a61aee3..50b34ee 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,10 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [1.2.28] - 2024-09-18
+### Added
+- [HollaEx]
+
 ## [1.2.27] - 2024-08-20
 ### Added
 - [BitMart]
diff --git a/README.md b/README.md
index 0a7ed4d..5987fcb 100644
--- a/README.md
+++ b/README.md
@@ -1,4 +1,4 @@
-# trading-backend [1.2.27](https://github.com/Drakkar-Software/trading-backend/tree/master/CHANGELOG.md)
+# trading-backend [1.2.28](https://github.com/Drakkar-Software/trading-backend/tree/master/CHANGELOG.md)
 [![PyPI](https://img.shields.io/pypi/v/trading-backend.svg)](https://pypi.python.org/pypi/trading-backend/)
 [![Downloads](https://pepy.tech/badge/trading-backend/month)](https://pepy.tech/project/trading-backend)
 [![Github-Action-CI](https://github.com/Drakkar-Software/trading-backend/workflows/trading-backend-CI/badge.svg)](https://github.com/Drakkar-Software/trading-backend/actions)