diff --git a/CHANGELOG.md b/CHANGELOG.md
index ceaa7fceb4..edd2b67d2d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,8 @@ _**For better traceability add the corresponding GitHub issue number in each cha
 
 ## [Unreleased]
 
+## [5.1.6] - 2024-07-03
+
 ### Fixed
 
 - Fixed ESS Investigation job processing not starting #579
@@ -698,7 +700,8 @@ _**For better traceability add the corresponding GitHub issue number in each cha
 - **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/5.1.4...HEAD
+[Unreleased]: https://github.com/eclipse-tractusx/item-relationship-service/compare/5.1.6...HEAD
+[5.1.6]: https://github.com/eclipse-tractusx/item-relationship-service/compare/5.1.4...5.1.6
 [5.1.4]: https://github.com/eclipse-tractusx/item-relationship-service/compare/5.1.3...5.1.4
 [5.1.3]: https://github.com/eclipse-tractusx/item-relationship-service/compare/5.1.2...5.1.3
 [5.1.2]: https://github.com/eclipse-tractusx/item-relationship-service/compare/5.1.1...5.1.2
diff --git a/charts/item-relationship-service/CHANGELOG.md b/charts/item-relationship-service/CHANGELOG.md
index 3392764545..7e2cab43a4 100644
--- a/charts/item-relationship-service/CHANGELOG.md
+++ b/charts/item-relationship-service/CHANGELOG.md
@@ -6,6 +6,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [7.1.6] - 2024-07-03
+
+### Changed
+
+- Update IRS version to 5.1.6
+
 
 ## [7.1.4] - 2024-05-27
 
diff --git a/charts/item-relationship-service/Chart.yaml b/charts/item-relationship-service/Chart.yaml
index 5eb5360ab9..67d2ebc8af 100644
--- a/charts/item-relationship-service/Chart.yaml
+++ b/charts/item-relationship-service/Chart.yaml
@@ -35,12 +35,12 @@ type: application
 # 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: 7.1.4
+version: 7.1.6
 # 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: "5.1.4"
+appVersion: "5.1.6"
 dependencies:
   - name: common
     repository: https://charts.bitnami.com/bitnami
diff --git a/docs/src/api/irs-api.yaml b/docs/src/api/irs-api.yaml
index 1828416bb2..3613409be2 100644
--- a/docs/src/api/irs-api.yaml
+++ b/docs/src/api/irs-api.yaml
@@ -2,7 +2,7 @@ openapi: 3.0.1
 info:
   description: The API of the Item Relationship Service (IRS) for retrieving item graphs along the value chain of CATENA-X partners.
   title: IRS API
-  version: 5.1.4
+  version: 5.1.6
 servers:
   - url: http://localhost:8080
 security:
diff --git a/irs-api/src/main/java/org/eclipse/tractusx/irs/IrsApplication.java b/irs-api/src/main/java/org/eclipse/tractusx/irs/IrsApplication.java
index e37f31b068..7a7b1c52ae 100644
--- a/irs-api/src/main/java/org/eclipse/tractusx/irs/IrsApplication.java
+++ b/irs-api/src/main/java/org/eclipse/tractusx/irs/IrsApplication.java
@@ -59,7 +59,7 @@ public class IrsApplication {
     /**
      * The IRS API version.
      */
-    public static final String API_VERSION = "5.1.4";
+    public static final String API_VERSION = "5.1.6";
 
     /**
      * The URL prefix for IRS API URLs.