diff --git a/tools/log4shellserver/pom.xml b/tools/log4shellserver/pom.xml
index 8cc46ee9..17b0db97 100644
--- a/tools/log4shellserver/pom.xml
+++ b/tools/log4shellserver/pom.xml
@@ -30,7 +30,7 @@
     <dependency>
       <groupId>io.undertow</groupId>
       <artifactId>undertow-core</artifactId>
-      <version>2.2.13.Final</version>
+      <version>2.3.20.Final</version>
     </dependency>
     <dependency>
       <groupId>commons-collections</groupId>