diff --git a/pom.parent.xml b/pom.parent.xml
index 0a6ea22..3106af8 100644
--- a/pom.parent.xml
+++ b/pom.parent.xml
@@ -61,7 +61,7 @@
     <jetty.contextpath>/${wtp.contextName}</jetty.contextpath>
 
     <!-- main versions -->
-    <plantuml.version>1.2023.10</plantuml.version>
+    <plantuml.version>1.2023.12</plantuml.version>
     <!-- Please keep the jetty version identical with the docker image -->
     <jetty.version>11.0.15</jetty.version>
     <!--