diff --git a/autobahn/src/main/java/io/crossbar/autobahn/wamp/interfaces/ISerializer.java b/autobahn/src/main/java/io/crossbar/autobahn/wamp/interfaces/ISerializer.java
index 88dd6d83..e8cc63f5 100644
--- a/autobahn/src/main/java/io/crossbar/autobahn/wamp/interfaces/ISerializer.java
+++ b/autobahn/src/main/java/io/crossbar/autobahn/wamp/interfaces/ISerializer.java
@@ -39,6 +39,10 @@ public ISerializer(JsonFactory factor) {
         mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
     }
 
+    public ISerializer(ObjectMapper objectMapper) {
+        mapper = objectMapper;
+    }
+
     public byte[] serialize(List<Object> message) {
         try {
             return mapper.writeValueAsBytes(message);
diff --git a/autobahn/src/main/java/io/crossbar/autobahn/wamp/interfaces/ITransport.java b/autobahn/src/main/java/io/crossbar/autobahn/wamp/interfaces/ITransport.java
index 83e7e25b..20b2e1ba 100644
--- a/autobahn/src/main/java/io/crossbar/autobahn/wamp/interfaces/ITransport.java
+++ b/autobahn/src/main/java/io/crossbar/autobahn/wamp/interfaces/ITransport.java
@@ -28,4 +28,6 @@ public interface ITransport {
     void abort() throws Exception;
 
     void setOptions(TransportOptions options);
+
+    TransportOptions getOptions();
 }
diff --git a/autobahn/src/main/java/io/crossbar/autobahn/wamp/serializers/JSONSerializer.java b/autobahn/src/main/java/io/crossbar/autobahn/wamp/serializers/JSONSerializer.java
index 9f45afbc..6299b7fb 100644
--- a/autobahn/src/main/java/io/crossbar/autobahn/wamp/serializers/JSONSerializer.java
+++ b/autobahn/src/main/java/io/crossbar/autobahn/wamp/serializers/JSONSerializer.java
@@ -13,6 +13,7 @@
 
 import com.fasterxml.jackson.core.JsonFactory;
 
+import com.fasterxml.jackson.databind.ObjectMapper;
 import io.crossbar.autobahn.wamp.interfaces.ISerializer;
 
 
@@ -24,6 +25,9 @@ public class JSONSerializer extends ISerializer {
     public JSONSerializer() {
         super(new JsonFactory());
     }
+    public JSONSerializer(ObjectMapper objectMapper) {
+        super(objectMapper);
+    }
 
     @Override
     public boolean isBinary() {
diff --git a/autobahn/src/main/java/io/crossbar/autobahn/wamp/transports/NettyWebSocket.java b/autobahn/src/main/java/io/crossbar/autobahn/wamp/transports/NettyWebSocket.java
index 1441f6b8..a63be8c5 100644
--- a/autobahn/src/main/java/io/crossbar/autobahn/wamp/transports/NettyWebSocket.java
+++ b/autobahn/src/main/java/io/crossbar/autobahn/wamp/transports/NettyWebSocket.java
@@ -229,6 +229,11 @@ public void setOptions(TransportOptions options) {
                 "Not implemented yet, provide options using connect() instead");
     }
 
+    @Override
+    public TransportOptions getOptions() {
+        return mOptions;
+    }
+
     private ByteBuf toByteBuf(byte[] bytes) {
         return Unpooled.copiedBuffer(bytes);
     }
diff --git a/autobahn/src/main/java/io/crossbar/autobahn/wamp/transports/NettyWebSocketClientHandler.java b/autobahn/src/main/java/io/crossbar/autobahn/wamp/transports/NettyWebSocketClientHandler.java
index 46611264..e8d32fe3 100644
--- a/autobahn/src/main/java/io/crossbar/autobahn/wamp/transports/NettyWebSocketClientHandler.java
+++ b/autobahn/src/main/java/io/crossbar/autobahn/wamp/transports/NettyWebSocketClientHandler.java
@@ -11,6 +11,7 @@
 
 package io.crossbar.autobahn.wamp.transports;
 
+import com.fasterxml.jackson.databind.ObjectMapper;
 import io.crossbar.autobahn.utils.ABLogger;
 import io.crossbar.autobahn.utils.Globals;
 import io.crossbar.autobahn.utils.IABLogger;
@@ -176,7 +177,8 @@ private ISerializer initializeSerializer(String negotiatedSerializer) throws Exc
             case CBORSerializer.NAME:
                 return new CBORSerializer();
             case JSONSerializer.NAME:
-                return new JSONSerializer();
+                ObjectMapper objectMapper = mTransport.getOptions().getObjectMapper();
+                return objectMapper == null ? new JSONSerializer() : new JSONSerializer(objectMapper);
             case MessagePackSerializer.NAME:
                 return new MessagePackSerializer();
             default:
diff --git a/autobahn/src/main/java/io/crossbar/autobahn/wamp/transports/RawSocket.java b/autobahn/src/main/java/io/crossbar/autobahn/wamp/transports/RawSocket.java
index 4d82cb19..e4b06fe3 100644
--- a/autobahn/src/main/java/io/crossbar/autobahn/wamp/transports/RawSocket.java
+++ b/autobahn/src/main/java/io/crossbar/autobahn/wamp/transports/RawSocket.java
@@ -111,4 +111,9 @@ public void abort() throws Exception {
     public void setOptions(TransportOptions options) {
 
     }
+
+    @Override
+    public TransportOptions getOptions() {
+        throw new UnsupportedOperationException("Not available");
+    }
 }
diff --git a/autobahn/src/main/java/io/crossbar/autobahn/wamp/transports/WebSocket.java b/autobahn/src/main/java/io/crossbar/autobahn/wamp/transports/WebSocket.java
index f8019f04..cf66ccad 100644
--- a/autobahn/src/main/java/io/crossbar/autobahn/wamp/transports/WebSocket.java
+++ b/autobahn/src/main/java/io/crossbar/autobahn/wamp/transports/WebSocket.java
@@ -155,6 +155,11 @@ public void setOptions(TransportOptions options) {
         mConnection.setOptions(webSocketOptions);
     }
 
+    @Override
+    public TransportOptions getOptions() {
+        throw new UnsupportedOperationException("Not available");
+    }
+
     private ISerializer initializeSerializer(String negotiatedSerializer) throws Exception {
         switch (negotiatedSerializer) {
             case CBORSerializer.NAME:
diff --git a/autobahn/src/main/java/io/crossbar/autobahn/wamp/types/TransportOptions.java b/autobahn/src/main/java/io/crossbar/autobahn/wamp/types/TransportOptions.java
index 3761fc76..c23a19ba 100644
--- a/autobahn/src/main/java/io/crossbar/autobahn/wamp/types/TransportOptions.java
+++ b/autobahn/src/main/java/io/crossbar/autobahn/wamp/types/TransportOptions.java
@@ -11,10 +11,13 @@
 
 package io.crossbar.autobahn.wamp.types;
 
+import com.fasterxml.jackson.databind.ObjectMapper;
+
 public class TransportOptions {
     private int mMaxFramePayloadSize;
     private int mAutoPingInterval;
     private int mAutoPingTimeout;
+    private ObjectMapper objectMapper;
 
     public TransportOptions() {
         mMaxFramePayloadSize = 128 * 1024;
@@ -54,6 +57,12 @@ public int getAutoPingInterval() {
         return mAutoPingInterval;
     }
 
+    public ObjectMapper getObjectMapper() {return objectMapper;}
+
+    public void setObjectMapper(ObjectMapper objectMapper) {
+        this.objectMapper = objectMapper;
+    }
+
     public void setAutoPingTimeout(int seconds) {
         mAutoPingTimeout = seconds;
     }