diff -Nru gpars-1.2.1/src/main/groovy/groovyx/gpars/remote/netty/RemoteObjectDecoder.java gpars-1.2.1.netty3/src/main/groovy/groovyx/gpars/remote/netty/RemoteObjectDecoder.java
--- gpars-1.2.1/src/main/groovy/groovyx/gpars/remote/netty/RemoteObjectDecoder.java	2014-05-09 07:20:08.000000000 +0200
+++ gpars-1.2.1.netty3/src/main/groovy/groovyx/gpars/remote/netty/RemoteObjectDecoder.java	2016-12-27 11:55:46.293323739 +0100
@@ -22,6 +22,7 @@
 import org.jboss.netty.channel.Channel;
 import org.jboss.netty.channel.ChannelHandler;
 import org.jboss.netty.channel.ChannelHandlerContext;
+import org.jboss.netty.handler.codec.serialization.ClassResolvers;
 import org.jboss.netty.handler.codec.serialization.ObjectDecoder;
 
 @ChannelHandler.Sharable
@@ -34,7 +35,7 @@
      * @param connection connection handling serialization details
      */
     public RemoteObjectDecoder(final RemoteConnection connection) {
-        super();
+        super(ClassResolvers.weakCachingResolver(null));
         this.connection = connection;
     }