diff --git a/code/hdfs/pom.xml b/code/hdfs/pom.xml
index 9bb0b38..158d52f 100644
--- a/code/hdfs/pom.xml
+++ b/code/hdfs/pom.xml
@@ -8,7 +8,7 @@
   <dependency>
 			<groupId>org.apache.logging.log4j</groupId>
 			<artifactId>log4j-core</artifactId>
-			<version>2.8.2</version>
+			<version>2.15.0</version>
 		</dependency>
 		<dependency>
 			<groupId>org.apache.hadoop</groupId>