diff --git a/11_Multithreading/SiteMapCreator/pom.xml b/11_Multithreading/SiteMapCreator/pom.xml
index cf1638d..64cb53f 100644
--- a/11_Multithreading/SiteMapCreator/pom.xml
+++ b/11_Multithreading/SiteMapCreator/pom.xml
@@ -16,7 +16,7 @@
     <dependency>
       <groupId>org.apache.logging.log4j</groupId>
       <artifactId>log4j-core</artifactId>
-      <version>2.14.0</version>
+      <version>2.17.0</version>
     </dependency>
     <dependency>
       <groupId>junit</groupId>