diff --git a/bookkeeper-benchmark/pom.xml b/bookkeeper-benchmark/pom.xml
index 1512a16..8e2fd43 100644
--- a/bookkeeper-benchmark/pom.xml
+++ b/bookkeeper-benchmark/pom.xml
@@ -83,9 +83,9 @@
       <scope>test</scope>
     </dependency>
     <dependency>
-      <groupId>org.jboss.netty</groupId>
+      <groupId>io.netty</groupId>
       <artifactId>netty</artifactId>
-      <version>3.2.4.Final</version>
+      <version>3.6.6.Final</version>
     <scope>compile</scope>
     </dependency>
     <dependency>
diff --git a/bookkeeper-server/pom.xml b/bookkeeper-server/pom.xml
index 1c7ebf8..8b11129 100644
--- a/bookkeeper-server/pom.xml
+++ b/bookkeeper-server/pom.xml
@@ -73,9 +73,9 @@
       <scope>test</scope>
     </dependency>
     <dependency>
-      <groupId>org.jboss.netty</groupId>
+      <groupId>io.netty</groupId>
       <artifactId>netty</artifactId>
-      <version>3.2.4.Final</version>
+      <version>3.6.6.Final</version>
       <scope>compile</scope>
     </dependency>
     <dependency>
diff --git a/hedwig-client/pom.xml b/hedwig-client/pom.xml
index b23ae2e..228b107 100644
--- a/hedwig-client/pom.xml
+++ b/hedwig-client/pom.xml
@@ -57,9 +57,9 @@
       <scope>test</scope>
     </dependency>
     <dependency>
-      <groupId>org.jboss.netty</groupId>
+      <groupId>io.netty</groupId>
       <artifactId>netty</artifactId>
-      <version>3.2.4.Final</version>
+      <version>3.6.6.Final</version>
       <scope>compile</scope>
     </dependency>
     <dependency>
diff --git a/hedwig-server/src/test/java/org/apache/hedwig/server/netty/WriteRecordingChannel.java b/hedwig-server/src/test/java/org/apache/hedwig/server/netty/WriteRecordingChannel.java
index 7ea9aff..ad415fd 100644
--- a/hedwig-server/src/test/java/org/apache/hedwig/server/netty/WriteRecordingChannel.java
+++ b/hedwig-server/src/test/java/org/apache/hedwig/server/netty/WriteRecordingChannel.java
@@ -166,5 +166,13 @@ public class WriteRecordingChannel implements Channel {
     public int compareTo(Channel o) {
         throw new RuntimeException("Not intended");
     }
+   
+    public Object getAttachment() {
+        return null;
+    }
+
+    public void setAttachment(Object attachment) {
+
+    }
 
 }