diff --git a/data-preprocessing-examples/pom.xml b/data-preprocessing-examples/pom.xml
index a97f9e8..2a4b505 100644
--- a/data-preprocessing-examples/pom.xml
+++ b/data-preprocessing-examples/pom.xml
@@ -96,7 +96,7 @@
         <dependency>
             <groupId>io.netty</groupId>
             <artifactId>netty-all</artifactId>
-            <version>4.1.22.Final</version>
+            <version>4.1.42.Final</version>
         </dependency>
         <dependency>
             <groupId>ch.qos.logback</groupId>