diff --git a/hadoop-common-project/hadoop-common/CHANGES.txt b/hadoop-common-project/hadoop-common/CHANGES.txt
index 9ba6a1bf69e..c77c0f4c00e 100644
--- a/hadoop-common-project/hadoop-common/CHANGES.txt
+++ b/hadoop-common-project/hadoop-common/CHANGES.txt
@@ -358,6 +358,8 @@ Release 2.0.4-beta - UNRELEASED
     HADOOP-9279. Document the need to build hadoop-maven-plugins for
     eclipse and separate project builds. (Tsuyoshi Ozawa via suresh)
 
+    HADOOP-9334. Upgrade netty version. (Nicolas Liochon via suresh)
+
   OPTIMIZATIONS
 
   BUG FIXES
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/pom.xml b/hadoop-mapreduce-project/hadoop-mapreduce-client/pom.xml
index 4d7ad123d80..b3846c90b71 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/pom.xml
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/pom.xml
@@ -130,7 +130,7 @@
       <scope>test</scope>
     </dependency>
     <dependency>
-      <groupId>org.jboss.netty</groupId>
+      <groupId>io.netty</groupId>
       <artifactId>netty</artifactId>
     </dependency>
     <dependency>
diff --git a/hadoop-mapreduce-project/pom.xml b/hadoop-mapreduce-project/pom.xml
index f06ca48cb56..cbc90eebbdb 100644
--- a/hadoop-mapreduce-project/pom.xml
+++ b/hadoop-mapreduce-project/pom.xml
@@ -61,7 +61,7 @@
           <artifactId>ant</artifactId>
         </exclusion>
         <exclusion>
-          <groupId>org.jboss.netty</groupId>
+          <groupId>io.netty</groupId>
           <artifactId>netty</artifactId>
         </exclusion>
         <exclusion>
@@ -151,7 +151,7 @@
       <artifactId>junit</artifactId>
     </dependency>
     <dependency>
-      <groupId>org.jboss.netty</groupId>
+      <groupId>io.netty</groupId>
       <artifactId>netty</artifactId>
     </dependency>
     <dependency>
diff --git a/hadoop-project/pom.xml b/hadoop-project/pom.xml
index 3e3bca212b6..e859b80399e 100644
--- a/hadoop-project/pom.xml
+++ b/hadoop-project/pom.xml
@@ -391,9 +391,9 @@
       </dependency>
 
       <dependency>
-        <groupId>org.jboss.netty</groupId>
+        <groupId>io.netty</groupId>
         <artifactId>netty</artifactId>
-        <version>3.2.4.Final</version>
+        <version>3.5.11.Final</version>
       </dependency>
 
       <dependency>
diff --git a/hadoop-yarn-project/hadoop-yarn/pom.xml b/hadoop-yarn-project/hadoop-yarn/pom.xml
index 5d261a2804d..cbf424b3c84 100644
--- a/hadoop-yarn-project/hadoop-yarn/pom.xml
+++ b/hadoop-yarn-project/hadoop-yarn/pom.xml
@@ -85,7 +85,7 @@
       <artifactId>guice-servlet</artifactId>
     </dependency>
     <dependency>
-      <groupId>org.jboss.netty</groupId>
+      <groupId>io.netty</groupId>
       <artifactId>netty</artifactId>
     </dependency>
     <dependency>
diff --git a/hadoop-yarn-project/pom.xml b/hadoop-yarn-project/pom.xml
index 4366b387e13..8da491dd926 100644
--- a/hadoop-yarn-project/pom.xml
+++ b/hadoop-yarn-project/pom.xml
@@ -59,7 +59,7 @@
           <artifactId>ant</artifactId>
         </exclusion>
         <exclusion>
-          <groupId>org.jboss.netty</groupId>
+          <groupId>io.netty</groupId>
           <artifactId>netty</artifactId>
         </exclusion>
         <exclusion>
@@ -149,7 +149,7 @@
       <artifactId>junit</artifactId>
     </dependency>
     <dependency>
-      <groupId>org.jboss.netty</groupId>
+      <groupId>io.netty</groupId>
       <artifactId>netty</artifactId>
     </dependency>
     <dependency>