diff --git a/pom.xml b/pom.xml
index f68b723..2f03ef8 100644
--- a/pom.xml
+++ b/pom.xml
@@ -109,7 +109,7 @@
             <dependency>
                 <groupId>io.netty</groupId>
                 <artifactId>netty-all</artifactId>
-                <version>4.1.26.Final</version>
+                <version>4.1.42.Final</version>
             </dependency>
 
             <!-- https://mvnrepository.com/artifact/org.codehaus.groovy/groovy-all -->