diff --git a/xos/tosca/custom_types/xos.m4 b/xos/tosca/custom_types/xos.m4
index 9773822..bb919e2 100644
--- a/xos/tosca/custom_types/xos.m4
+++ b/xos/tosca/custom_types/xos.m4
@@ -866,6 +866,9 @@
         derived_from: tosca.relationships.Root
         valid_target_types: [ tosca.capabilities.xos.NodeLabel ]
 
+    tosca.relationships.DependsOn:
+        derived_from: tosca.relationships.Root
+
     tosca.capabilities.xos.Service:
         derived_from: tosca.capabilities.Root
         description: An XOS Service
diff --git a/xos/tosca/custom_types/xos.yaml b/xos/tosca/custom_types/xos.yaml
index 21e8b8b..530e534 100644
--- a/xos/tosca/custom_types/xos.yaml
+++ b/xos/tosca/custom_types/xos.yaml
@@ -1178,6 +1178,9 @@
         derived_from: tosca.relationships.Root
         valid_target_types: [ tosca.capabilities.xos.NodeLabel ]
 
+    tosca.relationships.DependsOn:
+        derived_from: tosca.relationships.Root
+
     tosca.capabilities.xos.Service:
         derived_from: tosca.capabilities.Root
         description: An XOS Service