diff --git a/zookeeper-election-master/pom.xml b/zookeeper-election-master/pom.xml
index cae89fb..18b9a7f 100644
--- a/zookeeper-election-master/pom.xml
+++ b/zookeeper-election-master/pom.xml
@@ -46,7 +46,7 @@
                   <artifactId>netty</artifactId>
                 </exclusion>-->
             </exclusions>
-            <version>3.4.14</version>
+            <version>3.7.2</version>
         </dependency>
     </dependencies>