diff --git a/package.xml b/package.xml
index 695304e..200781a 100644
--- a/package.xml
+++ b/package.xml
@@ -43,6 +43,7 @@
   <exec_depend>warehouse_ros_mongo</exec_depend>
   <exec_depend>gazebo_ros</exec_depend>
   <exec_depend>controller_manager</exec_depend>
+  <exec_depend>python-tk</exec_depend>
 
 
   <!-- The export tag contains other, unspecified, tags -->