diff --git a/CDM-TOPIC-MODELING/pom.xml b/CDM-TOPIC-MODELING/pom.xml
index 8c07546..704f3a1 100644
--- a/CDM-TOPIC-MODELING/pom.xml
+++ b/CDM-TOPIC-MODELING/pom.xml
@@ -61,7 +61,7 @@
         <dependency>
             <groupId>org.elasticsearch</groupId>
             <artifactId>elasticsearch</artifactId>
-            <version>5.6.2</version>
+            <version>6.8.15</version>
         </dependency>
         <dependency>
             <groupId>org.elasticsearch.client</groupId>