diff --git a/pom.xml b/pom.xml
index 5ca48be75..ad06ec1a6 100644
--- a/pom.xml
+++ b/pom.xml
@@ -722,6 +722,18 @@
         <configuration>
           <source>1.5</source>
           <aggregate>true</aggregate>
+          <doclet>gr.spinellis.umlgraph.doclet.UmlGraphDoc</doclet>
+          <docletArtifact>
+            <groupId>gr.spinellis</groupId>
+            <artifactId>UmlGraph</artifactId>
+            <version>4.6</version>
+          </docletArtifact>
+          <additionalparam>
+            -inferrel -inferdep -quiet -hide java.*
+            -collpackages java.util.* -qualify
+            -postfixpackage -nodefontsize 9
+            -nodefontpackagesize 7
+          </additionalparam>
         </configuration>
       </plugin>
       <plugin>