diff --git a/template/server/src/rooms.ts b/template/server/src/rooms.ts
index b76835c..fc110af 100644
--- a/template/server/src/rooms.ts
+++ b/template/server/src/rooms.ts
@@ -337,7 +337,8 @@ export class Rooms<State, Input> {
 			return;
 		}
 		if (seat.addr === addr) return;
-		const key = `${room.id}/${seat.id}`;
+		// Keyed by the token too: a seat given a new token is noted afresh at once, whoever held it before.
+		const key = `${room.id}/${seat.id}/${seat.tokenHash}`;
 		const now = Date.now();
 		if ((this.seenAt.get(key) ?? 0) > now - SEEN_EVERY_MS) return;
 		this.seenAt.set(key, now);