diff --git a/topsort-api-v2.yml b/topsort-api-v2.yml
index 2e8ff39..d8ddb9a 100644
--- a/topsort-api-v2.yml
+++ b/topsort-api-v2.yml
@@ -1943,6 +1943,7 @@ components:
     EventsRequest:
       type: object
       additionalProperties: false
+      minProperties: 1
       properties:
         impressions:
           title: Impressions