diff --git a/src/server/api/events.ts b/src/server/api/events.ts
index 90f2fa6..c8af1bf 100644
--- a/src/server/api/events.ts
+++ b/src/server/api/events.ts
@@ -12,7 +12,7 @@ router.sse('/stream', (send) => {
     queue = queue.then(() => send(...args))
   }
   const unsub = onEvent(event => safeSend(event))
-  const heartbeat = setInterval(() => safeSend('', 'ping'), 60_000)
+  const heartbeat = setInterval(() => safeSend({ type: 'ping' }, 'ping'), 60_000)
   return () => {
     clearInterval(heartbeat)
     unsub()