diff --git a/misp_modules/modules/expansion/variotdbs.py b/misp_modules/modules/expansion/variotdbs.py
index d268ace..6d4bf81 100644
--- a/misp_modules/modules/expansion/variotdbs.py
+++ b/misp_modules/modules/expansion/variotdbs.py
@@ -113,6 +113,7 @@ class VariotdbsParser:
                         update_date['date']
                     )
                     break
+        vulnerability_object.add_reference(self.misp_attribute.uuid, 'related-to')
         self.misp_event.add_object(vulnerability_object)