diff --git a/netty4/pom.xml b/netty4/pom.xml
index c6e89fc..e47f87d 100644
--- a/netty4/pom.xml
+++ b/netty4/pom.xml
@@ -14,7 +14,7 @@
     <dependency>
       <groupId>io.netty</groupId>
       <artifactId>netty-all</artifactId>
-      <version>4.0.10.Final</version>
+      <version>4.0.19.Final</version>
     </dependency>
     <dependency>
       <groupId>org.javassist</groupId>