diff --git a/pom.xml b/pom.xml
index a45e243784af05f7263d951cc124a4643c65c8f1..b15adc3f5a19d9253315dc20842fe7a843e4fbaf 100644
--- a/pom.xml
+++ b/pom.xml
@@ -28,8 +28,11 @@
 		<spring-boot.build-image.imageName>docker.ozg-sh.de/ozg-operator:build-latest</spring-boot.build-image.imageName>
 		
 		<mapstruct.version>1.5.5.Final</mapstruct.version>
-		<keycloak-adapter.version>18.0.0</keycloak-adapter.version>
+		<keycloak-adapter.version>20.0.5</keycloak-adapter.version>
 		
+		<resteasy-legacy.version>6.2.4.Final</resteasy-legacy.version>
+		<resteasy.version>6.2.4.Final</resteasy.version>
+        <resteasy.undertow.version>${resteasy.version}</resteasy.undertow.version>
 	</properties>
 	<dependencies>
 		<dependency>
@@ -40,19 +43,100 @@
 		    <groupId>org.keycloak</groupId>
 		    <artifactId>keycloak-admin-client</artifactId>
 		    <version>${keycloak-adapter.version}</version>
+		    <exclusions>
+                    <exclusion>
+                        <groupId>org.jboss.resteasy</groupId>
+               			 <artifactId>resteasy-client</artifactId>
+                    </exclusion>
+                    <exclusion>
+                        <groupId>org.jboss.resteasy</groupId>
+                		<artifactId>resteasy-multipart-provider</artifactId>
+                    </exclusion>
+                    <exclusion>
+                        <groupId>org.jboss.resteasy</groupId>
+                		<artifactId>resteasy-jackson2-provider</artifactId>
+                    </exclusion>
+                    <exclusion>
+                        <groupId>org.jboss.resteasy</groupId>
+                		<artifactId>resteasy-jaxb-provider</artifactId>
+                    </exclusion>
+                </exclusions>
 		</dependency>
 		<dependency>
 		    <groupId>org.mapstruct</groupId>
 		    <artifactId>mapstruct</artifactId>
 		    <version>${mapstruct.version}</version>
 		</dependency>
-
-
+		
 		<dependency>
 			<groupId>io.javaoperatorsdk</groupId>
 			<artifactId>operator-framework-spring-boot-starter</artifactId>
 			<version>${operator-sdk.version}</version>
 		</dependency>
+		
+		<!-- start https://github.com/keycloak/keycloak/blob/main/pom.xml -->
+		<dependency>
+                <groupId>org.jboss.resteasy</groupId>
+                <artifactId>resteasy-core</artifactId>
+                <version>${resteasy.version}</version>
+                <exclusions>
+                    <exclusion>
+                        <groupId>log4j</groupId>
+                        <artifactId>log4j</artifactId>
+                    </exclusion>
+                    <exclusion>
+                        <groupId>org.slf4j</groupId>
+                        <artifactId>slf4j-api</artifactId>
+                    </exclusion>
+                    <exclusion>
+                        <groupId>org.slf4j</groupId>
+                        <artifactId>slf4j-simple</artifactId>
+                    </exclusion>
+                </exclusions>
+            </dependency>
+            <dependency>
+                <groupId>org.jboss.resteasy</groupId>
+                <artifactId>resteasy-multipart-provider</artifactId>
+                <version>${resteasy.version}</version>
+            </dependency>
+            <dependency>
+                <groupId>org.jboss.resteasy</groupId>
+                <artifactId>resteasy-jackson2-provider</artifactId>
+                <version>${resteasy.version}</version>
+            </dependency>
+            <dependency>
+                <groupId>org.jboss.resteasy</groupId>
+                <artifactId>resteasy-jaxb-provider</artifactId>
+                <version>${resteasy.version}</version>
+            </dependency>
+            <dependency>
+                <groupId>org.jboss.resteasy</groupId>
+                <artifactId>resteasy-client</artifactId>
+                <version>${resteasy.version}</version>
+            </dependency>
+            <dependency>
+                <groupId>org.jboss.resteasy</groupId>
+                <artifactId>resteasy-undertow</artifactId>
+                <version>${resteasy.undertow.version}</version>
+                <exclusions>
+                    <exclusion>
+                        <groupId>io.undertow</groupId>
+                        <artifactId>undertow-servlet</artifactId>
+                    </exclusion>
+                    <exclusion>
+                        <groupId>io.undertow</groupId>
+                        <artifactId>undertow-core</artifactId>
+                    </exclusion>
+                </exclusions>
+            </dependency>
+            <!-- ende https://github.com/keycloak/keycloak/blob/main/pom.xml -->
+
+
+<!--		<dependency>-->
+<!--			<groupId>io.javaoperatorsdk</groupId>-->
+<!--			<artifactId>operator-framework-spring-boot-starter</artifactId>-->
+<!--			<version>${operator-sdk.version}</version>-->
+<!--		</dependency>-->
 		<dependency>
 			<groupId>org.projectlombok</groupId>
 			<artifactId>lombok</artifactId>
diff --git a/src/main/java/de/ozgcloud/operator/SpringNativeConfiguration.java b/src/main/java/de/ozgcloud/operator/SpringNativeConfiguration.java
index e050ad3a2925754a1d1ccd7a372701b26065d1bb..d737c4162cc470efc17a289ef2ccd39e3774c7df 100644
--- a/src/main/java/de/ozgcloud/operator/SpringNativeConfiguration.java
+++ b/src/main/java/de/ozgcloud/operator/SpringNativeConfiguration.java
@@ -5,6 +5,7 @@ import java.util.Objects;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.ThreadPoolExecutor;
 
+import org.keycloak.admin.client.Keycloak;
 import org.reflections.Reflections;
 import org.springframework.aot.hint.MemberCategory;
 import org.springframework.aot.hint.RuntimeHints;
@@ -50,6 +51,15 @@ public class SpringNativeConfiguration {
 			combined.add(KeycloakUserSpec.KeycloakUserSpecUserGroup.class);
 			combined.add(KeycloakUserStatus.class);
 
+			combined.add(Keycloak.class);
+			combined.add(org.keycloak.admin.client.spi.ResteasyClientClassicProvider.class);
+			combined.add(org.jboss.resteasy.client.jaxrs.ResteasyClientBuilder.class);
+			combined.addAll(subtypesOfKubernetesResource);
+
+			combined.add(org.jboss.resteasy.resteasy_jaxrs.i18n.Messages.class);
+			combined.addAll(reflections.getSubTypesOf(org.jboss.resteasy.resteasy_jaxrs.i18n.Messages.class));
+			combined.add(org.jboss.resteasy.client.jaxrs.internal.ResteasyClientBuilderImpl.class);
+
 			combined.add(org.keycloak.admin.client.Keycloak.class);
 
 			try {