diff --git a/pom.xml b/pom.xml
old mode 100755
new mode 100644
index 8ef72a84e..48ff4e9fc
--- a/pom.xml
+++ b/pom.xml
@@ -67,7 +67,7 @@
         <grpc.version>1.0.0</grpc.version>
         <lombok.version>1.18.4</lombok.version>
         <paho.client.version>1.1.0</paho.client.version>
-        <netty.version>4.1.22.Final</netty.version>
+        <netty.version>4.1.50.Final</netty.version>
         <os-maven-plugin.version>1.5.0</os-maven-plugin.version>
         <rabbitmq.version>3.6.5</rabbitmq.version>
         <kafka.version>0.11.0.2</kafka.version>