rxnetty 0.5 proxy domain resolution problem

import io.netty.buffer.ByteBuf;
import io.netty.handler.codec.http.HttpMethod;
import io.netty.handler.logging.LogLevel;
import io.netty.handler.proxy.HttpProxyHandler;
import io.reactivex.netty.protocol.http.client.HttpClient;
import io.reactivex.netty.protocol.http.client.HttpClientResponse;
import org.junit.Ignore;
import org.junit.Test;
import rx.Observable;

import javax.ws.rs.core.MediaType;
import java.net.InetSocketAddress;
import java.nio.charset.Charset;

final byte[] body = ("body...").getBytes();
final HttpClientResponse<Object> res = HttpClient.newClient("api.yaas.io", 443)
    .enableWireLogging(LogLevel.DEBUG).unsafeSecure()
    .addChannelHandlerFirst("proxy", () -> new HttpProxyHandler(new InetSocketAddress("proxyHost", 8080)))
    .createRequest(HttpMethod.POST, "/uri-path").addHeader("Content-Type",MediaType.APPLICATION_FORM_URLENCODED)
    .addHeader("Content-Length", body.length)
    .writeBytesContent(Observable.just(body))
    .toBlocking().first();
final Object content = res.getContent().toBlocking().first();
System.out.println("it works);
System.out.println(((ByteBuf) content).toString(Charset.defaultCharset()));

----------------
Caused by: java.net.UnknownHostException: api.yaas.io
	at java.net.InetAddress.getAllByName0(InetAddress.java:1280)
	at java.net.InetAddress.getAllByName(InetAddress.java:1192)
	at java.net.InetAddress.getAllByName(InetAddress.java:1126)
	at java.net.InetAddress.getByName(InetAddress.java:1076)
	at io.netty.resolver.DefaultNameResolver.doResolve(DefaultNameResolver.java:46)
	at io.netty.resolver.DefaultNameResolver.doResolve(DefaultNameResolver.java:30)
	at io.netty.resolver.SimpleNameResolver.resolve(SimpleNameResolver.java:133)
	at io.netty.bootstrap.Bootstrap.doResolveAndConnect(Bootstrap.java:171)
	at io.netty.bootstrap.Bootstrap.connect(Bootstrap.java:139)
	at io.reactivex.netty.protocol.tcp.client.ClientState$3.call(ClientState.java:237)
	at io.reactivex.netty.protocol.tcp.client.ClientState$3.call(ClientState.java:227)
	at io.reactivex.netty.protocol.tcp.client.ConnectionObservable$1.call(ConnectionObservable.java:48)
	at io.reactivex.netty.protocol.tcp.client.ConnectionObservable$1.call(ConnectionObservable.java:45)
	at rx.Observable.unsafeSubscribe(Observable.java:7713)
	at io.reactivex.netty.protocol.tcp.client.ConnectionRequestImpl$1$1$1.onCompleted(ConnectionRequestImpl.java:61)
	at rx.subjects.SubjectSubscriptionManager$SubjectObserver.onCompleted(SubjectSubscriptionManager.java:232)
	at rx.internal.operators.NotificationLite.accept(NotificationLite.java:140)
	at rx.subjects.ReplaySubject$UnboundedReplayState.accept(ReplaySubject.java:466)
	at rx.subjects.ReplaySubject$UnboundedReplayState.replayObserverFromIndex(ReplaySubject.java:515)
	at rx.subjects.ReplaySubject$1.call(ReplaySubject.java:98)
	at rx.subjects.ReplaySubject$1.call(ReplaySubject.java:94)
	at rx.subjects.SubjectSubscriptionManager.call(SubjectSubscriptionManager.java:59)
	at rx.subjects.SubjectSubscriptionManager.call(SubjectSubscriptionManager.java:35)
	at rx.Observable.unsafeSubscribe(Observable.java:7713)
	at rx.internal.operators.OnSubscribeCache.call(OnSubscribeCache.java:74)
	at rx.internal.operators.OnSubscribeCache.call(OnSubscribeCache.java:42)
	at rx.Observable$1.call(Observable.java:145)
	at rx.Observable$1.call(Observable.java:137)
	at rx.Observable.unsafeSubscribe(Observable.java:7713)
	at io.reactivex.netty.protocol.tcp.client.ConnectionRequestImpl$1.call(ConnectionRequestImpl.java:76)
	at io.reactivex.netty.protocol.tcp.client.ConnectionRequestImpl$1.call(ConnectionRequestImpl.java:41)
	at rx.Observable$1.call(Observable.java:145)
	at rx.Observable$1.call(Observable.java:137)
	at rx.Observable$1.call(Observable.java:145)
	at rx.Observable$1.call(Observable.java:137)
	at rx.Observable$1.call(Observable.java:145)
	at rx.Observable$1.call(Observable.java:137)
	at rx.Observable.unsafeSubscribe(Observable.java:7713)
	at io.reactivex.netty.protocol.http.client.internal.HttpClientRequestImpl$OnSubscribeFuncImpl.call(HttpClientRequestImpl.java:475)
	at io.reactivex.netty.protocol.http.client.internal.HttpClientRequestImpl$OnSubscribeFuncImpl.call(HttpClientRequestImpl.java:450)
	at rx.Observable$1.call(Observable.java:145)
	at rx.Observable$1.call(Observable.java:137)
	at rx.Observable$1.call(Observable.java:145)
	at rx.Observable$1.call(Observable.java:137)
	at rx.Observable.subscribe(Observable.java:7803)
	at rx.observables.BlockingObservable.blockForSingle(BlockingObservable.java:442)