diff --git a/pom.xml b/pom.xml
old mode 100755
new mode 100644
index bfb5caa1ce4..5c45dcb1740
--- a/pom.xml
+++ b/pom.xml
@@ -64,7 +64,7 @@
         <grpc.version>1.12.0</grpc.version>
         <lombok.version>1.16.18</lombok.version>
         <paho.client.version>1.1.0</paho.client.version>
-        <netty.version>4.1.22.Final</netty.version>
+        <netty.version>4.1.49.Final</netty.version>
         <os-maven-plugin.version>1.5.0</os-maven-plugin.version>
         <rabbitmq.version>4.8.0</rabbitmq.version>
         <surfire.version>2.19.1</surfire.version>