Updating Zookeeper
diff --git a/kerby-backend/zookeeper-backend/pom.xml b/kerby-backend/zookeeper-backend/pom.xml
index 5eac144..a9ba5e5 100644
--- a/kerby-backend/zookeeper-backend/pom.xml
+++ b/kerby-backend/zookeeper-backend/pom.xml
@@ -27,7 +27,7 @@
   <packaging>jar</packaging>
 
   <properties>
-    <zookeeper.version>3.4.10</zookeeper.version>
+    <zookeeper.version>3.4.13</zookeeper.version>
   </properties>
 
   <dependencies>