Causado por: java.lang.ClassNotFoundException: org.elasticsearch.transport.Netty3Plugin

Estoy usando Spring Boot 2.0.3 Release y tengo un problema al crear instanciasorg.elasticsearch.client.Client. Mi código

Client client = new PreBuiltTransportClient(Settings.builder()
                .put("cluster.name", clustername)
                .build())
                .addTransportAddress(
new InetSocketTransportAddress(InetAddress.getByName(host), port)
);

Este código me da el error:

Caused by: java.lang.NoClassDefFoundError: org/elasticsearch/transport/Netty3Plugin
at org.elasticsearch.transport.client.PreBuiltTransportClient.<clinit>(PreBuiltTransportClient.java:91) ~[transport-5.6.10.jar:5.6.10]
at kz.icode.idmatrix.config.ElasticsearchConfiguration.client(ElasticsearchConfiguration.java:56) ~[classes/:na]
at kz.icode.idmatrix.config.ElasticsearchConfiguration$EnhancerBySpringCGLIB$7e53ae93.CGLIB$client$0(<generated>) ~[classes/:na]
at kz.icode.idmatrix.config.ElasticsearchConfiguration$EnhancerBySpringCGLIB$7e53ae93$FastClassBySpringCGLIB$fef36179.invoke(<generated>) ~[classes/:na]
at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228) ~[spring-core-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:361) ~[spring-context-5.0.7.RELEASE.jar:5.0.7.RELEASE]
at kz.icode.idmatrix.config.ElasticsearchConfiguration$EnhancerBySpringCGLIB$7e53ae93.client(<generated>) ~[classes/:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_171]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_171]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_171]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_171]
at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154) ~[spring-beans-5.0.7.RELEASE.jar:5.0.7.RELEASE]
... 99 common frames omitted

Yo sueloorg.elasticsearch:elasticsearch:5.6.10 yorg.elasticsearch.client:client:5.6.10.

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