diff --git a/pom.xml b/pom.xml
index 4dd0ef0..383e480 100644
--- a/pom.xml
+++ b/pom.xml
@@ -17,7 +17,7 @@
         <logback.version>1.2.3</logback.version>
         <slf4j.version>1.7.28</slf4j.version>
         <!-- network -->
-        <netty.version>4.1.39.Final</netty.version>
+        <netty.version>4.1.42.Final</netty.version>
         <httpclient.version>4.5.9</httpclient.version>
         <!-- Spring Framework 4.3.x: JDK 6-8 -->
         <spring4.3.x.version>4.3.25.RELEASE</spring4.3.x.version>