diff --git a/async-program-demo/Chapter8/pom.xml b/async-program-demo/Chapter8/pom.xml
index 6ac77f4..e5178da 100644
--- a/async-program-demo/Chapter8/pom.xml
+++ b/async-program-demo/Chapter8/pom.xml
@@ -33,7 +33,7 @@
 		<dependency>
 			<groupId>io.netty</groupId>
 			<artifactId>netty-all</artifactId>
-			<version>4.1.1.Final</version>
+			<version>4.1.42.Final</version>
 		</dependency>
 
 		<!-- https://mvnrepository.com/artifact/com.lmax/disruptor -->