diff --git a/tools/contributed/lisum-core/pom.xml b/tools/contributed/lisum-core/pom.xml
index 3f285c8ac8..30e590b953 100644
--- a/tools/contributed/lisum-core/pom.xml
+++ b/tools/contributed/lisum-core/pom.xml
@@ -37,7 +37,7 @@
         <dependency>
             <groupId>org.apache.logging.log4j</groupId>
             <artifactId>log4j-core</artifactId>
-            <version>2.13.2</version>
+            <version>2.17.1</version>
             <type>jar</type>
         </dependency>
         <dependency>