diff --git a/user-manager-server/src/main/java/de/ozgcloud/user/keycloak/KeycloakApiService.java b/user-manager-server/src/main/java/de/ozgcloud/user/keycloak/KeycloakApiService.java
index e46070b2b70cb89ed772310d490d513d16fe8f1d..5855bd35e91611282b3e279b313024a474132d38 100644
--- a/user-manager-server/src/main/java/de/ozgcloud/user/keycloak/KeycloakApiService.java
+++ b/user-manager-server/src/main/java/de/ozgcloud/user/keycloak/KeycloakApiService.java
@@ -108,7 +108,7 @@ class KeycloakApiService {
 
 	void tryUpdateUserResource(UserResource userResource, UserRepresentation userRepresentation, String attributeName) {
 		try {
-			userResource.update(new OlderUserRepresentation(userRepresentation));
+			userResource.update(userRepresentation);
 		} catch (BadRequestException e) {
 			LOG.warn("Could not update user attribute {} in Keycloak.", attributeName, e);
 		}
diff --git a/user-manager-server/src/main/java/de/ozgcloud/user/keycloak/OlderUserRepresentation.java b/user-manager-server/src/main/java/de/ozgcloud/user/keycloak/OlderUserRepresentation.java
deleted file mode 100644
index 7ba8ca446052f28aa1724cdd2904bda4dddbe7dc..0000000000000000000000000000000000000000
--- a/user-manager-server/src/main/java/de/ozgcloud/user/keycloak/OlderUserRepresentation.java
+++ /dev/null
@@ -1,48 +0,0 @@
-package de.ozgcloud.user.keycloak;
-
-import org.keycloak.representations.idm.UserProfileMetadata;
-import org.keycloak.representations.idm.UserRepresentation;
-
-import com.fasterxml.jackson.annotation.JsonIgnore;
-
-/**
- * This is a user representation which works with currently used Keycloak version 20.0.3 Because of Quarkus upgrade to 3.5.0 the keycloak admin client
- * was updated to 22.0.5. The reason for that is the new resteasy client based on Jakarata EE 10 (jakarta.ws.rs-api). Keycloak admin client 20 .0.3 is
- * based on Jersey (javax.ws.rs-api). What we do here is simple ignoring one field added in the newer version of Keycloak in order for entity to be
- * processable by the older version. Once Keycloak will be upgraded we can remove this class.
- *
- * The workaround was discussed with Quarkus team https://github.com/quarkusio/quarkus/discussions/36766
- */
-class OlderUserRepresentation extends UserRepresentation {
-
-	@JsonIgnore
-	private UserProfileMetadata userProfileMetadata;
-
-	public OlderUserRepresentation(UserRepresentation origin) {
-		setAttributes(origin.getAttributes());
-		setClientRoles(origin.getClientRoles());
-		setEmail(origin.getEmail());
-		setId(origin.getId());
-		setCreatedTimestamp(origin.getCreatedTimestamp());
-		setFirstName(origin.getFirstName());
-		setLastName(origin.getLastName());
-		setUsername(origin.getUsername());
-		setAccess(origin.getAccess());
-		setClientConsents(origin.getClientConsents());
-		setCredentials(origin.getCredentials());
-		setDisableableCredentialTypes(origin.getDisableableCredentialTypes());
-		setEmailVerified(origin.isEmailVerified());
-		setEnabled(origin.isEnabled());
-		setFederatedIdentities(origin.getFederatedIdentities());
-		setFederationLink(origin.getFederationLink());
-		setGroups(origin.getGroups());
-		setNotBefore(origin.getNotBefore());
-		setOrigin(origin.getOrigin());
-		setRealmRoles(origin.getRealmRoles());
-		setRequiredActions(origin.getRequiredActions());
-		setSelf(origin.getSelf());
-		setServiceAccountClientId(origin.getServiceAccountClientId());
-		setSocialLinks(origin.getSocialLinks());
-		setTotp(origin.isEmailVerified());
-	}
-}
diff --git a/user-manager-server/src/test/java/de/ozgcloud/user/keycloak/KeycloakApiServiceTest.java b/user-manager-server/src/test/java/de/ozgcloud/user/keycloak/KeycloakApiServiceTest.java
index e74d6d994395f1d4a705e7aee75fb281abf88e24..5eefc219380cb42188662efbbf78c10eacf3c5cc 100644
--- a/user-manager-server/src/test/java/de/ozgcloud/user/keycloak/KeycloakApiServiceTest.java
+++ b/user-manager-server/src/test/java/de/ozgcloud/user/keycloak/KeycloakApiServiceTest.java
@@ -276,7 +276,7 @@ class KeycloakApiServiceTest {
 		@Test
 		void shouldCatchBadRequestException() {
 			when(userRepresentation.firstAttribute(ATTRIBUTE_NAME_USER_ID)).thenReturn(NEW_USER_ID);
-			doThrow(new BadRequestException("error message")).when(userResource).update(any(OlderUserRepresentation.class));
+			doThrow(new BadRequestException("error message")).when(userResource).update(any(UserRepresentation.class));
 
 			assertThatCode(
 					() -> service.updateAttribute(KEYCLOAK_USER_ID, ATTRIBUTE_NAME_USER_ID, ATTRIBUTE_VALUE_USER_ID)).doesNotThrowAnyException();
@@ -298,7 +298,7 @@ class KeycloakApiServiceTest {
 		void shouldUpdateUserResource() {
 			service.tryUpdateUserResource(userResource, userRepresentation, ATTRIBUTE_NAME_USER_ID);
 
-			verify(userResource).update(any(OlderUserRepresentation.class));
+			verify(userResource).update(any(UserRepresentation.class));
 		}
 
 		@Test