diff --git a/data/api/client-server/report_content.yaml b/data/api/client-server/report_content.yaml
index ebc04ffe..22131ef9 100644
--- a/data/api/client-server/report_content.yaml
+++ b/data/api/client-server/report_content.yaml
@@ -18,6 +18,7 @@ info:
 paths:
   "/rooms/{roomId}/report":
     post:
+      x-addedInMatrixVersion: "1.12"
       summary: Report a room as inappropriate.
       description: |-
         Reports a room as inappropriate to the server, which may then notify