diff --git a/pom.xml b/pom.xml
index 1341f216f6e43..ec7d45148f50a 100644
--- a/pom.xml
+++ b/pom.xml
@@ -89,12 +89,12 @@ flexible messaging model and an intuitive client API.</description>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
     <redirectTestOutputToFile>true</redirectTestOutputToFile>
-    <test.additional.args></test.additional.args>
+    <test.additional.args/>
     <testReuseFork>true</testReuseFork>
     <testForkCount>4</testForkCount>
     <testRealAWS>false</testRealAWS>
     <testRetryCount>1</testRetryCount>
-    <testJacocoAgentArgument></testJacocoAgentArgument>
+    <testJacocoAgentArgument/>
     <docker.organization>apachepulsar</docker.organization>
     <skipSourceReleaseAssembly>false</skipSourceReleaseAssembly>
     <skipBuildDistribution>false</skipBuildDistribution>
@@ -106,7 +106,7 @@ flexible messaging model and an intuitive client API.</description>
 
     <!-- Use Luna Streaming BookKeeper custom version -->
     <bookkeeper.version>4.14.7.1.0.4</bookkeeper.version>
-    <zookeeper.version>3.8.0</zookeeper.version>
+    <zookeeper.version>3.8.3</zookeeper.version>
     <commons-cli.version>1.5.0</commons-cli.version>
     <commons-text.version>1.10.0</commons-text.version>
     <snappy.version>1.1.10.1</snappy.version> <!-- ZooKeeper server -->