diff --git a/scala/dllib/pom.xml b/scala/dllib/pom.xml
index 6d46b3be3ad..7c16bff9a01 100644
--- a/scala/dllib/pom.xml
+++ b/scala/dllib/pom.xml
@@ -134,7 +134,7 @@
         <dependency>
             <groupId>org.apache.zookeeper</groupId>
             <artifactId>zookeeper</artifactId>
-            <version>3.9.3</version>
+            <version>3.9.4</version>
             <scope>${spark-scope}</scope>
             <exclusions>
                 <exclusion>