diff --git a/src/ai/backend/manager/api/schema.graphql b/src/ai/backend/manager/api/schema.graphql
index d09f07d0372..b0fe6d3deb3 100644
--- a/src/ai/backend/manager/api/schema.graphql
+++ b/src/ai/backend/manager/api/schema.graphql
@@ -1367,6 +1367,9 @@ This action cannot be undone.
 type PurgeUser {
   ok: Boolean
   msg: String
+
+  """Added in 24.03.7. ID of backgroun task deleting user owned vfolders."""
+  bgtask_id: UUID
 }
 
 input PurgeUserInput {