diff --git a/iot-gizwits-statistics/pom.xml b/iot-gizwits-statistics/pom.xml
index eeef5dd..0b9bfac 100644
--- a/iot-gizwits-statistics/pom.xml
+++ b/iot-gizwits-statistics/pom.xml
@@ -163,7 +163,7 @@
         <dependency>
             <groupId>io.netty</groupId>
             <artifactId>netty-all</artifactId>
-            <version>4.1.42.Final</version>
+            <version>4.1.50.Final</version>
         </dependency>
 
         <dependency>