diff --git a/Jenkinsfile b/Jenkinsfile
index 178d7c92ca96faee73cf746d6939fa4c3e174720..1ca43547bb6dbd75a259584604503af4f8db1ee8 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -24,7 +24,7 @@
 pipeline {
     agent {
        node {
-           label 'ozgcloud-jenkins-build-agent-jdk21'
+           label 'ozgcloud-jenkins-build-agent'
         }
     }
 
diff --git a/ozgcloud-elasticsearch-operator/src/test/java/de/ozgcloud/operator/common/elasticsearch/ElasticsearchTestClient.java b/ozgcloud-elasticsearch-operator/src/test/java/de/ozgcloud/operator/common/elasticsearch/ElasticsearchTestClient.java
index 28e63d558c65a2ac14e1396af5d2f16120284d9b..46f884e170556cce243b4cc2eb6bd0696334cde0 100644
--- a/ozgcloud-elasticsearch-operator/src/test/java/de/ozgcloud/operator/common/elasticsearch/ElasticsearchTestClient.java
+++ b/ozgcloud-elasticsearch-operator/src/test/java/de/ozgcloud/operator/common/elasticsearch/ElasticsearchTestClient.java
@@ -39,7 +39,7 @@ import co.elastic.clients.transport.rest_client.RestClientTransport;
 
 public class ElasticsearchTestClient {
 	
-	private static final String IMAGE_NAME = "docker.elastic.co/elasticsearch/elasticsearch:8.16.1";
+	private static final String IMAGE_NAME = "docker.elastic.co/elasticsearch/elasticsearch:8.11.3";
 	private static final String USER = "elastic";
 	private static final String PASSWORD = "s3cret";
 	private static final int PORT = 9200;
@@ -57,7 +57,7 @@ public class ElasticsearchTestClient {
 	}
 	
 	private static RestClient buildRestClient() {
-		var host = new HttpHost("host.docker.internal", ELASTICSEARCH_CONTAINER.getMappedPort(PORT), SCHEME);
+		var host = new HttpHost("localhost", ELASTICSEARCH_CONTAINER.getMappedPort(PORT), SCHEME);
 		var credentialsProvider = buildCredentialsProvider();
 		var builder = RestClient.builder(host);
 
diff --git a/pom.xml b/pom.xml
index e92f9a6fade39150b5a941ab2123e8ba9978c5e3..a769f929307e4ee6d74e3280d04e88edc7a11ca8 100644
--- a/pom.xml
+++ b/pom.xml
@@ -30,7 +30,7 @@
 	<parent>
 		<groupId>de.ozgcloud.common</groupId>
 		<artifactId>ozgcloud-common-parent</artifactId>
-		<version>4.6.0</version>
+		<version>4.7.0</version>
 	</parent>
 
 	<groupId>de.ozgcloud</groupId>
@@ -48,6 +48,10 @@
 	</modules>
 
 	<properties>
+		<java.version>17</java.version>
+		<maven.compiler.target>17</maven.compiler.target>
+		<maven.compiler.source>17</maven.compiler.source>
+
 		<operator-sdk.version>5.4.1</operator-sdk.version>
 
 		<!-- tools -->