diff --git a/build.gradle b/build.gradle
index d6ebe09..744de2d 100644
--- a/build.gradle
+++ b/build.gradle
@@ -1,8 +1,8 @@
 group 'su.nlq'
-version '3.5.4'
+version '3.6.0'
 
 ext {
-  vertxVersion = '3.5.4'
+  vertxVersion = '3.6.0'
   prometheusVersion = '0.5.0'
 }
 
@@ -106,5 +106,6 @@ artifacts {
 }
 
 signing {
+  required { gradle.taskGraph.hasTask("uploadArchives") }
   sign configurations.archives
 }
\ No newline at end of file
diff --git a/src/main/java/io/vertx/ext/prometheus/VertxPrometheusMetrics.java b/src/main/java/io/vertx/ext/prometheus/VertxPrometheusMetrics.java
index 628262e..f6ca690 100644
--- a/src/main/java/io/vertx/ext/prometheus/VertxPrometheusMetrics.java
+++ b/src/main/java/io/vertx/ext/prometheus/VertxPrometheusMetrics.java
@@ -5,12 +5,8 @@
 import io.vertx.core.Closeable;
 import io.vertx.core.Verticle;
 import io.vertx.core.Vertx;
-import io.vertx.core.datagram.DatagramSocket;
 import io.vertx.core.datagram.DatagramSocketOptions;
-import io.vertx.core.eventbus.EventBus;
-import io.vertx.core.http.HttpClient;
 import io.vertx.core.http.HttpClientOptions;
-import io.vertx.core.http.HttpServer;
 import io.vertx.core.http.HttpServerOptions;
 import io.vertx.core.metrics.impl.DummyVertxMetrics;
 import io.vertx.core.net.NetClientOptions;
@@ -28,7 +24,6 @@
 import static io.vertx.ext.prometheus.MetricsType.*;
 
 public final class VertxPrometheusMetrics extends DummyVertxMetrics {
-  private final @NotNull Vertx vertx;
   private final @NotNull VertxPrometheusOptions options;
   private final @NotNull VerticleMetrics verticleMetrics;
   private final @NotNull TimerMetrics timerMetrics;
@@ -38,8 +33,7 @@ public final class VertxPrometheusMetrics extends DummyVertxMetrics {
 
   private @Nullable Closeable server;
 
-  public VertxPrometheusMetrics(@NotNull Vertx vertx, @NotNull VertxPrometheusOptions options) {
-    this.vertx = vertx;
+  public VertxPrometheusMetrics(@NotNull VertxPrometheusOptions options) {
     this.options = options;
     this.verticleMetrics = options.isEnabled(Verticles) ? new VerticlePrometheusMetrics(options.getRegistry()) : new VerticleDummyMetrics();
     this.timerMetrics = options.isEnabled(Timers) ? new TimerPrometheusMetrics(options.getRegistry()) : new TimerDummyMetrics();
@@ -49,7 +43,7 @@ public VertxPrometheusMetrics(@NotNull Vertx vertx, @NotNull VertxPrometheusOpti
   }
 
   @Override
-  public void eventBusInitialized(@NotNull EventBus bus) {
+  public void vertxCreated(@NotNull Vertx vertx) {
     if (options.isEmbeddedServerEnabled()) {
       server = MetricsServer
           .create(vertx)
@@ -79,61 +73,56 @@ public void timerEnded(long id, boolean cancelled) {
   }
 
   @Override
-  public @NotNull EventBusMetrics<?> createMetrics(@NotNull EventBus eventBus) {
+  public @NotNull EventBusMetrics createEventBusMetrics() {
     return options.isEnabled(EventBus)
         ? new EventBusPrometheusMetrics(options.getRegistry())
-        : super.createMetrics(eventBus);
+        : super.createEventBusMetrics();
   }
 
   @Override
-  public @NotNull HttpServerMetrics<?, ?, ?> createMetrics(@NotNull HttpServer httpServer, @NotNull SocketAddress localAddress, @NotNull HttpServerOptions httpServerOptions) {
-    return options.isEnabled(HTTPServer)
-        ? new HTTPServerPrometheusMetrics(options.getRegistry(), localAddress, gauges, counters, histograms)
-        : super.createMetrics(httpServer, localAddress, httpServerOptions);
-  }
-
-  @Override
-  public @NotNull HttpClientMetrics<?, ?, ?, ?, ?> createMetrics(@NotNull HttpClient client, @NotNull HttpClientOptions httpClientOptions) {
+  public @NotNull HttpClientMetrics<?, ?, ?, ?, ?> createHttpClientMetrics(@NotNull HttpClientOptions httpClientOptions) {
     return options.isEnabled(HTTPClient)
         ? new HTTPClientPrometheusMetrics(options.getRegistry(), getLocalAddress(httpClientOptions.getLocalAddress()), gauges, counters, histograms)
-        : super.createMetrics(client, httpClientOptions);
+        : super.createHttpClientMetrics(httpClientOptions);
   }
 
   @Override
-  public @NotNull TCPMetrics<?> createMetrics(@NotNull SocketAddress localAddress, @NotNull NetServerOptions netServerOptions) {
-    return options.isEnabled(NetServer)
-        ? new NetServerPrometheusMetrics(options.getRegistry(), localAddress, gauges, counters)
-        : super.createMetrics(localAddress, netServerOptions);
+  public @NotNull DatagramSocketMetrics createDatagramSocketMetrics(@NotNull DatagramSocketOptions datagramSocketOptions) {
+    return options.isEnabled(DatagramSocket)
+        ? new DatagramSocketPrometheusMetrics(options.getRegistry(), counters)
+        : super.createDatagramSocketMetrics(datagramSocketOptions);
   }
 
   @Override
-  public @NotNull TCPMetrics<?> createMetrics(@NotNull NetClientOptions netClientOptions) {
-    return options.isEnabled(NetClient)
-        ? new NetClientPrometheusMetrics(options.getRegistry(), getLocalAddress(netClientOptions.getLocalAddress()), gauges, counters)
-        : super.createMetrics(netClientOptions);
+  public @NotNull HttpServerMetrics<?, ?, ?> createHttpServerMetrics(@NotNull HttpServerOptions httpServerOptions, @NotNull SocketAddress localAddress) {
+    return options.isEnabled(HTTPServer)
+        ? new HTTPServerPrometheusMetrics(options.getRegistry(), localAddress, gauges, counters, histograms)
+        : super.createHttpServerMetrics(httpServerOptions, localAddress);
   }
 
   @Override
-  public @NotNull DatagramSocketMetrics createMetrics(@NotNull DatagramSocket socket, @NotNull DatagramSocketOptions datagramSocketOptions) {
-    return options.isEnabled(DatagramSocket)
-        ? new DatagramSocketPrometheusMetrics(options.getRegistry(), counters)
-        : super.createMetrics(socket, datagramSocketOptions);
+  public @NotNull PoolMetrics<?> createPoolMetrics(@NotNull String poolType, @NotNull String poolName, int maxPoolSize) {
+    return options.isEnabled(Pools)
+        ? new PoolPrometheusMetrics(options.getRegistry(), poolType, poolName, maxPoolSize)
+        : super.createPoolMetrics(poolType, poolName, maxPoolSize);
   }
 
   @Override
-  public @NotNull <P> PoolMetrics<?> createMetrics(@NotNull P pool, @NotNull String poolType, @NotNull String poolName, int maxPoolSize) {
-    return options.isEnabled(Pools)
-        ? new PoolPrometheusMetrics(options.getRegistry(), poolType, poolName, maxPoolSize)
-        : super.createMetrics(pool, poolType, poolName, maxPoolSize);
+  public @NotNull TCPMetrics<?> createNetClientMetrics(@NotNull NetClientOptions netClientOptions) {
+    return options.isEnabled(HTTPClient)
+        ? new NetClientPrometheusMetrics(options.getRegistry(), getLocalAddress(netClientOptions.getLocalAddress()), gauges, counters)
+        : super.createNetClientMetrics(netClientOptions);
   }
 
   @Override
-  public boolean isMetricsEnabled() {
-    return true;
+  public @NotNull TCPMetrics<?> createNetServerMetrics(@NotNull NetServerOptions netServerOptions, @NotNull SocketAddress localAddress) {
+    return options.isEnabled(NetServer)
+        ? new NetServerPrometheusMetrics(options.getRegistry(), localAddress, gauges, counters)
+        : super.createNetServerMetrics(netServerOptions, localAddress);
   }
 
   @Override
-  public boolean isEnabled() {
+  public boolean isMetricsEnabled() {
     return true;
   }
 
diff --git a/src/main/java/io/vertx/ext/prometheus/VertxPrometheusMetricsFactory.java b/src/main/java/io/vertx/ext/prometheus/VertxPrometheusMetricsFactory.java
index 636cfd2..3e6e3f9 100644
--- a/src/main/java/io/vertx/ext/prometheus/VertxPrometheusMetricsFactory.java
+++ b/src/main/java/io/vertx/ext/prometheus/VertxPrometheusMetricsFactory.java
@@ -1,7 +1,7 @@
 package io.vertx.ext.prometheus;
 
-import io.vertx.core.Vertx;
 import io.vertx.core.VertxOptions;
+import io.vertx.core.json.JsonObject;
 import io.vertx.core.metrics.MetricsOptions;
 import io.vertx.core.spi.VertxMetricsFactory;
 import io.vertx.core.spi.metrics.VertxMetrics;
@@ -9,9 +9,10 @@
 
 public final class VertxPrometheusMetricsFactory implements VertxMetricsFactory {
 
+
   @Override
-  public @NotNull VertxMetrics metrics(@NotNull Vertx vertx, @NotNull VertxOptions vertxOptions) {
-    return new VertxPrometheusMetrics(vertx, asPrometheusOptions(vertxOptions));
+  public VertxMetrics metrics(@NotNull VertxOptions vertxOptions) {
+    return new VertxPrometheusMetrics( asPrometheusOptions(vertxOptions));
   }
 
   @Override
@@ -19,6 +20,11 @@ public final class VertxPrometheusMetricsFactory implements VertxMetricsFactory
     return new VertxPrometheusOptions();
   }
 
+  @Override
+  public MetricsOptions newOptions(JsonObject jsonObject) {
+    return new VertxPrometheusOptions(jsonObject);
+  }
+
   private static @NotNull VertxPrometheusOptions asPrometheusOptions(@NotNull VertxOptions vertxOptions) {
     final MetricsOptions metricsOptions = vertxOptions.getMetricsOptions();
     return metricsOptions instanceof VertxPrometheusOptions
diff --git a/src/main/java/io/vertx/ext/prometheus/metrics/HTTPServerPrometheusMetrics.java b/src/main/java/io/vertx/ext/prometheus/metrics/HTTPServerPrometheusMetrics.java
index c765c93..f9a5cb2 100644
--- a/src/main/java/io/vertx/ext/prometheus/metrics/HTTPServerPrometheusMetrics.java
+++ b/src/main/java/io/vertx/ext/prometheus/metrics/HTTPServerPrometheusMetrics.java
@@ -48,13 +48,7 @@ public void responseEnd(@NotNull HTTPRequestMetrics.Metric metric, @NotNull Http
   }
 
   @Override
-  public @Nullable Void upgrade(@NotNull HTTPRequestMetrics.Metric metric, @NotNull ServerWebSocket serverWebSocket) {
-    requests.upgrade(metric);
-    return null;
-  }
-
-  @Override
-  public @Nullable Void connected(@Nullable Void metric, @NotNull ServerWebSocket serverWebSocket) {
+  public @Nullable Void connected(@Nullable Void metric, @Nullable HTTPRequestMetrics.Metric requestMetric, ServerWebSocket serverWebSocket) {
     websockets.increment();
     return metric;
   }
diff --git a/src/main/java/io/vertx/ext/prometheus/metrics/PrometheusMetrics.java b/src/main/java/io/vertx/ext/prometheus/metrics/PrometheusMetrics.java
index cd258a1..7dfd4c0 100644
--- a/src/main/java/io/vertx/ext/prometheus/metrics/PrometheusMetrics.java
+++ b/src/main/java/io/vertx/ext/prometheus/metrics/PrometheusMetrics.java
@@ -16,11 +16,6 @@ protected PrometheusMetrics(@NotNull CollectorRegistry registry) {
     this.registry = registry;
   }
 
-  @Override
-  public final boolean isEnabled() {
-    return !collectors.isEmpty();
-  }
-
   @Override
   public final void close() {
     collectors.forEach(registry::unregister);
diff --git a/src/main/java/io/vertx/ext/prometheus/server/MetricsServer.java b/src/main/java/io/vertx/ext/prometheus/server/MetricsServer.java
index 1d455bb..0c4b27b 100644
--- a/src/main/java/io/vertx/ext/prometheus/server/MetricsServer.java
+++ b/src/main/java/io/vertx/ext/prometheus/server/MetricsServer.java
@@ -27,7 +27,7 @@ public enum MetricsServer {
     return (registry, format) -> {
       router.route(METRICS_PATH).handler(format.handler(registry));
       return address -> {
-        server.requestHandler(router::accept).listen(address.port(), address.host());
+        server.requestHandler(router).listen(address.port(), address.host());
         log.info("Prometheus metrics server started at " + address);
         return server::close;
       };
diff --git a/src/test/java/io/vertx/ext/prometheus/ExternalServerTest.java b/src/test/java/io/vertx/ext/prometheus/ExternalServerTest.java
index 480c4e2..e66d5fd 100644
--- a/src/test/java/io/vertx/ext/prometheus/ExternalServerTest.java
+++ b/src/test/java/io/vertx/ext/prometheus/ExternalServerTest.java
@@ -10,6 +10,10 @@
 
 public final class ExternalServerTest extends PrometheusMetricsTestCase {
 
+  public ExternalServerTest() {
+    super(o -> o.setEmbeddedServerEnabled(false));
+  }
+
   @Test
   public void test() {
     MetricsServer