diff --git a/hive-c0re/src/matrix.rs b/hive-c0re/src/matrix.rs
index a750ef26..720c851d 100644
--- a/hive-c0re/src/matrix.rs
+++ b/hive-c0re/src/matrix.rs
@@ -888,10 +888,10 @@ pub async fn ensure_admin_user(client: &reqwest::Client, register_token: &str) -
 /// (`#admins:<server>`). Sends `!admin users make-user-admin @<localpart>:<server>` as
 /// @hive, polls for the bot's "Done:" success response.
 ///
-/// Workaround for a once-missing `/_synapse/admin/v2/users` in tuwunel —
-/// not re-verified against the version currently deployed. Whether the
-/// admin-room polling here can become a direct HTTP call is an open
-/// question tracked on the forge.
+/// Goes through the admin room rather than a direct HTTP call because
+/// tuwunel implements parts of the Synapse admin API but not user
+/// creation, and upstream does not intend to add it. This is the
+/// intended long-term mechanism, not a stopgap awaiting an upstream fix.
 pub async fn promote_user_to_admin(
     client: &reqwest::Client,
     admin_token: &str,