diff --git a/service-wamp/pom.xml b/service-wamp/pom.xml
index 489eab9a4..08e98a060 100644
--- a/service-wamp/pom.xml
+++ b/service-wamp/pom.xml
@@ -46,7 +46,7 @@
         <dependency>
             <groupId>io.netty</groupId>
             <artifactId>netty-handler</artifactId>
-            <version>4.1.21.Final</version>
+            <version>4.1.34.Final</version>
         </dependency>
         <dependency>
             <groupId>com.github.akarnokd</groupId>