diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7f09c7bb9b..d55123e9c6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,12 +5,13 @@ 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).
 
 ## [Unreleased]
-### Changed
-- Replaced Discovery Service mock with real implementation
 
 ### Known knowns
 - PLACEHOLDER REMOVE IF EMPTY: risks that were introduced or discovered in the release and are known but not resolved
-
+- 
+## [2.5.1] - 2023-04-28
+### Changed
+- Replaced Discovery Service mock with real implementation
 
 ## [2.5.0] - 2023-04-17
 ### Added
@@ -205,7 +206,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Unresolved
 - **Select Aspects you need**  You are able to select the needed aspects for which you want to collect the correct endpoint information.
 
-[Unreleased]: https://github.com/eclipse-tractusx/item-relationship-service/compare/2.5.0...HEAD
+[Unreleased]: https://github.com/eclipse-tractusx/item-relationship-service/compare/2.5.1...HEAD
+[2.5.1]: https://github.com/eclipse-tractusx/item-relationship-service/compare/2.5.0...2.5.1
 [2.5.0]: https://github.com/eclipse-tractusx/item-relationship-service/compare/2.4.0...2.5.0
 [2.4.1]: https://github.com/eclipse-tractusx/item-relationship-service/compare/2.4.0...2.4.1
 [2.4.0]: https://github.com/eclipse-tractusx/item-relationship-service/compare/2.3.2...2.4.0
diff --git a/charts/irs-helm/CHANGELOG.md b/charts/irs-helm/CHANGELOG.md
index e06bd01a8e..68f2b6571b 100644
--- a/charts/irs-helm/CHANGELOG.md
+++ b/charts/irs-helm/CHANGELOG.md
@@ -5,11 +5,17 @@ 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).
 
 ## [Unreleased]
+
+## [5.2.0] - 2023-04-28
 ### Added
 - New config entries for portal user, used to call discovery service
   - `portal.oauth2.clientId`
   - `portal.oauth2.clientSecret`
 
+### Changed
+- Updated IRS version to 2.5.1
+
+
 ## [5.1.1] - 2023-04-17
 ### Fixed
 - Added missing config keys in the spring config map template