diff --git a/elasticsearch5.x/pom.xml b/elasticsearch5.x/pom.xml
index 199bce3..b6425e2 100644
--- a/elasticsearch5.x/pom.xml
+++ b/elasticsearch5.x/pom.xml
@@ -60,7 +60,7 @@
 		<dependency>
 			<groupId>org.apache.logging.log4j</groupId>
 			<artifactId>log4j-api</artifactId>
-			<version>2.9.1</version>
+			<version>2.16.0</version>
 		</dependency>
 
 		<dependency>