diff --git a/pom.xml b/pom.xml
index d3e0f1bc..3d31e490 100644
--- a/pom.xml
+++ b/pom.xml
@@ -48,7 +48,7 @@
         <dependency>
             <groupId>io.netty</groupId>
             <artifactId>netty-all</artifactId>
-            <version>4.1.4.Final</version>
+            <version>4.1.20.Final</version>
             <scope>compile</scope>
         </dependency>
     </dependencies>