diff --git a/starting_pen/model.config b/starting_pen/model.config
index 1c1abb1..bfe84f0 100644
--- a/starting_pen/model.config
+++ b/starting_pen/model.config
@@ -20,4 +20,13 @@
     A starting pen for a robot.
   </description>
 
+  <!-- This depend is a hack to force download of mud_box, because adding
+       a depend in a locally stored mud_atlas model doesn't do the job. -->
+  <depend>
+    <model>
+      <uri>model://mud_box</uri>
+      <version>1.0</version>
+    </model>
+  </depend>
+
 </model>