diff --git a/core/pom.xml b/core/pom.xml
index 46d2e6876..745afeaff 100644
--- a/core/pom.xml
+++ b/core/pom.xml
@@ -151,7 +151,7 @@
     <dependency>
       <groupId>io.netty</groupId>
       <artifactId>netty-all</artifactId>
-      <version>4.0.21.Final</version>
+      <version>4.1.42.Final</version>
     </dependency>
     <dependency>
       <groupId>com.googlecode.json-simple</groupId>