diff --git a/graph/GraphDemo/pom.xml b/graph/GraphDemo/pom.xml
index 7b6b2e2..6c908c0 100644
--- a/graph/GraphDemo/pom.xml
+++ b/graph/GraphDemo/pom.xml
@@ -43,7 +43,7 @@
         <dependency>
             <groupId>org.apache.logging.log4j</groupId>
             <artifactId>log4j-core</artifactId>
-            <version>2.9.1</version>
+            <version>2.15.0</version>
         </dependency>        
         <dependency>
             <groupId>org.apache.logging.log4j</groupId>