diff --git a/pom.xml b/pom.xml
index d9caf2a6cced..4a05ecaff92a 100644
--- a/pom.xml
+++ b/pom.xml
@@ -151,7 +151,7 @@
     <joda.version>2.4</joda.version>
     <junit.version>4.12</junit.version>
     <mockito.version>1.9.5</mockito.version>
-    <netty.version>4.1.8.Final</netty.version>
+    <netty.version>4.1.51.Final</netty.version>
     <netty.tcnative.version>1.1.33.Fork26</netty.tcnative.version>
     <protobuf.version>3.2.0</protobuf.version>
     <pubsub.version>v1-rev10-1.22.0</pubsub.version>