diff --git a/stack.xml b/stack.xml
index 18a360a..f1a4f37 100644
--- a/stack.xml
+++ b/stack.xml
@@ -5,6 +5,7 @@
   <review status="unreviewed" notes=""/>
   <url>http://ros.org/wiki/soem</url>
   <depend stack="ros" />
+  <depend stack="orocos_toolchain" />
   <depend stack="rtt_ros_integration" />
 
 </stack>