diff --git a/specs/ingestion/common/schemas/run.yml b/specs/ingestion/common/schemas/run.yml
index 669d103106..48bcaf0665 100644
--- a/specs/ingestion/common/schemas/run.yml
+++ b/specs/ingestion/common/schemas/run.yml
@@ -26,6 +26,7 @@ RunListResponse:
   required:
     - runs
     - pagination
+    - window
 
 Run:
   type: object