diff --git a/overcloud.j2.yaml b/overcloud.j2.yaml
index d036b2fcf2..49daccc845 100644
--- a/overcloud.j2.yaml
+++ b/overcloud.j2.yaml
@@ -1362,3 +1362,8 @@ outputs:
       map_merge:
       - {get_attr: [AnsibleHostVars, value]}
       - {get_param: ExtraAnsibleHostVars}
+  TripleoHeatTemplatesJinja2RenderingDataSources:
+    description: The role_data and the network_data used when rendering the THT Jinja2 templates
+    value:
+      roles_data: {{ roles }}
+      networks_data: {{ networks }}