diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9358ba02c0..1d6d48e1aa 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,8 +8,6 @@ _**For better traceability add the corresponding GitHub issue number in each cha
 
 ## [Unreleased]
 
-## [5.1.0] - 2024-04-30
-
 ### Changed
 
 - Removed obsolete entries from acceptedPolicies configuration. #530
@@ -630,8 +628,7 @@ _**For better traceability add the corresponding GitHub issue number in each cha
 ### 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/5.1.0...HEAD
-[5.1.0]: https://github.com/eclipse-tractusx/item-relationship-service/compare/5.0.0...5.1.0
+[Unreleased]: https://github.com/eclipse-tractusx/item-relationship-service/compare/5.0.0...HEAD
 [5.0.0]: https://github.com/eclipse-tractusx/item-relationship-service/compare/4.9.0...5.0.0
 [4.9.0]: https://github.com/eclipse-tractusx/item-relationship-service/compare/4.8.0...4.9.0
 [4.8.0]: https://github.com/eclipse-tractusx/item-relationship-service/compare/4.7.0...4.8.0
diff --git a/charts/item-relationship-service/CHANGELOG.md b/charts/item-relationship-service/CHANGELOG.md
index 1366aca855..13e3089fc4 100644
--- a/charts/item-relationship-service/CHANGELOG.md
+++ b/charts/item-relationship-service/CHANGELOG.md
@@ -6,15 +6,11 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
-## [7.1.0] - 2024-04-30
-
 ### Fixed
 
 - Fix for incomplete renaming of Helm chart (see #489)
 
-### Changed
 
-- Update IRS version to 5.1.0
 
 ## [7.0.1] - 2024-04-17
 
diff --git a/docs/src/api/irs-api.yaml b/docs/src/api/irs-api.yaml
index 52094f769b..e0704da682 100644
--- a/docs/src/api/irs-api.yaml
+++ b/docs/src/api/irs-api.yaml
@@ -3,7 +3,7 @@ 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: 5.1.0
+  version: 5.0.0
 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 4fccef412e..0971e3657d 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 = "5.1.0";
+    public static final String API_VERSION = "5.0.0";
 
     /**
      * The URL prefix for IRS API URLs.