diff --git a/pom.xml b/pom.xml
index 4904f60..46076af 100644
--- a/pom.xml
+++ b/pom.xml
@@ -29,7 +29,7 @@
     <dependency>
       <groupId>io.netty</groupId>
       <artifactId>netty-all</artifactId>
-      <version>4.1.37.Final</version>
+      <version>4.1.42.Final</version>
     </dependency>
     <!-- https://mvnrepository.com/artifact/com.datumbox/lpsolve -->
     <dependency>