diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2b0186ed..cf2f1972 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,7 +4,7 @@ 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/),
 
-## [Unreleased]
+## [1.5.6] - 2024-05-27
 
 ### Added
 - Support Portal autosetup latest workflow.
@@ -13,6 +13,9 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 ### Fixed
 - Dependabot reported security issues fixed.
 
+### Know Know
+- The retrieval and processing of the DIM Technical User credentials for automatic configuration and set-up of the EDC connector could not be fully tested. So the full functionality cannot be guaranteed.
+
 ## [1.5.5] - 2024-05-13
 ### Changed
 - postgresql DB upgrade
diff --git a/README.md b/README.md
index 93f68d37..db5822c1 100644
--- a/README.md
+++ b/README.md
@@ -12,8 +12,8 @@ This service will help service provider to set up DFT/SDE with EDC and EDC as se
 ### Software Version
 
 ```shell
-Application version: 1.5.5
-Helm release version: 1.5.8
+Application version: 1.5.6
+Helm release version: 1.5.9
 ```
 
 # Container images
diff --git a/charts/orchestrator/Chart.yaml b/charts/orchestrator/Chart.yaml
index 5133b923..ece3a24c 100644
--- a/charts/orchestrator/Chart.yaml
+++ b/charts/orchestrator/Chart.yaml
@@ -38,13 +38,13 @@ sources:
 # This is the chart version. This version number should be incremented each time you make changes
 # to the chart and its templates, including the app version.
 # Versions are expected to follow Semantic Versioning (https://semver.org/)
-version: 1.5.8
+version: 1.5.9
 
 # This is the version number of the application being deployed. This version number should be
 # incremented each time you make changes to the application. Versions are not expected to
 # follow Semantic Versioning. They should reflect the version the application is using.
 # It is recommended to use it with quotes.
-appVersion: "1.5.5"
+appVersion: "1.5.6"
 
 dependencies:
   - condition: postgresql.enabled
diff --git a/charts/orchestrator/README.md b/charts/orchestrator/README.md
index daed0ea9..5a7d12f0 100644
--- a/charts/orchestrator/README.md
+++ b/charts/orchestrator/README.md
@@ -1,6 +1,6 @@
 # managed-service-orchestrator
 
-![Version: 1.5.8](https://img.shields.io/badge/Version-1.5.8-informational?style=flat-square) ![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square) ![AppVersion: 1.5.5](https://img.shields.io/badge/AppVersion-1.5.5-informational?style=flat-square)
+![Version: 1.5.9](https://img.shields.io/badge/Version-1.5.9-informational?style=flat-square) ![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square) ![AppVersion: 1.5.6](https://img.shields.io/badge/AppVersion-1.5.6-informational?style=flat-square)
 
 This service will help service provider to set up DFT/SDE with EDC and EDC as service in service provider environment.
 
diff --git a/pom.xml b/pom.xml
index a88e27b2..132c6311 100644
--- a/pom.xml
+++ b/pom.xml
@@ -32,7 +32,7 @@
 	</parent>
 	<groupId>org.eclipse.tractusx</groupId>
 	<artifactId>managed-service-orchestrator</artifactId>
-	<version>1.5.4</version>
+	<version>1.5.6</version>
 	<name>managed-service-orchestrator</name>
 	<description>managed-service-orchestrator</description>
 	<properties>