diff --git a/build.xml b/build.xml
index ff25e16ea2..9e1de8d144 100644
--- a/build.xml
+++ b/build.xml
@@ -386,7 +386,7 @@
           <dependency groupId="com.yammer.metrics" artifactId="metrics-core" version="2.0.3" />
           <dependency groupId="edu.stanford.ppl" artifactId="snaptree" version="0.1" />
           <dependency groupId="org.mindrot" artifactId="jbcrypt" version="0.3m" />
-          <dependency groupId="io.netty" artifactId="netty" version="3.5.9.Final" />
+          <dependency groupId="io.netty" artifactId="netty" version="3.6.6.Final" />
         </dependencyManagement>
         <developer id="alakshman" name="Avinash Lakshman"/>
         <developer id="antelder" name="Anthony Elder"/>
diff --git a/lib/netty-3.5.9.Final.jar b/lib/netty-3.5.9.Final.jar
deleted file mode 100644
index 7f41e0e1db..0000000000
Binary files a/lib/netty-3.5.9.Final.jar and /dev/null differ
diff --git a/lib/netty-3.6.6.Final.jar b/lib/netty-3.6.6.Final.jar
new file mode 100644
index 0000000000..35cb0730cc
Binary files /dev/null and b/lib/netty-3.6.6.Final.jar differ