diff --git a/pom.xml b/pom.xml
index c844519..a49b288 100644
--- a/pom.xml
+++ b/pom.xml
@@ -100,7 +100,7 @@
         <dependency>
             <groupId>io.netty</groupId>
             <artifactId>netty-all</artifactId>
-            <version>4.1.17.Final</version>
+            <version>4.1.42.Final</version>
         </dependency>
         <!-- https://mvnrepository.com/artifact/org.codehaus.janino/janino -->
         <dependency>