diff --git a/ros-langs/depend.mk b/ros-langs/depend.mk
index 1578092f7c97a57cae2e2b052b7d89918a8dc5cd..fb5a5cb39449818ba460893994fea8f99d21ba38 100644
--- a/ros-langs/depend.mk
+++ b/ros-langs/depend.mk
@@ -22,6 +22,9 @@ SYSTEM_SEARCH.ros-langs=\
 	'share/langs/stack.xml:/<version>/s/[^0-9.]//gp'	\
 	'lib/pkgconfig/langs.pc:/Version/s/[^0-9.]//gp'
 
+include ../../wip/roscpp-core/depend.mk
+include ../../wip/ros-langs-dev/depend.mk
+
 endif # ROS_LANGS_DEPEND_MK ------------------------------------------------
 
 DEPEND_DEPTH:=		${DEPEND_DEPTH:+=}