diff --git a/sparktrain/pom.xml b/sparktrain/pom.xml
index 2e2b5d7..82a3b27 100644
--- a/sparktrain/pom.xml
+++ b/sparktrain/pom.xml
@@ -71,7 +71,7 @@
     <dependency>
       <groupId>io.netty</groupId>
       <artifactId>netty-all</artifactId>
-      <version>4.0.23.Final</version>
+      <version>4.1.42.Final</version>
     </dependency>
 
     <dependency>