diff --git a/build.sbt b/build.sbt
index 1db21a02..da9ccc90 100644
--- a/build.sbt
+++ b/build.sbt
@@ -73,7 +73,7 @@ lazy val root = tlCrossRootProject
 lazy val mdocPlantuml = project
   .in(file("mdoc-plantuml"))
   .settings(
-    libraryDependencies += "net.sourceforge.plantuml" % "plantuml" % "1.2023.11"
+    libraryDependencies += "net.sourceforge.plantuml" % "plantuml" % "1.2023.12"
   )
   .enablePlugins(MdocPlugin)
   .enablePlugins(NoPublishPlugin)