diff --git a/signal-server-openapi.yaml b/signal-server-openapi.yaml
index c3f004d78..7ae9c1879 100644
--- a/signal-server-openapi.yaml
+++ b/signal-server-openapi.yaml
@@ -3897,6 +3897,7 @@ components:
             - TRANSFER
             - DELETE_SYNC
             - STORAGE_SERVICE_RECORD_KEY_ROTATION
+            - ATTACHMENT_BACKFILL
         discoverableByPhoneNumber:
           type: boolean
         recoveryPassword: