diff --git a/packages/backend/src/server/api/StreamingApiServerService.ts b/packages/backend/src/server/api/StreamingApiServerService.ts
index a1758fd051..2e554c9ad1 100644
--- a/packages/backend/src/server/api/StreamingApiServerService.ts
+++ b/packages/backend/src/server/api/StreamingApiServerService.ts
@@ -128,6 +128,7 @@ export class StreamingApiServerService {
 				ev.removeAllListeners();
 				stream.dispose();
 				this.redisForSub.off('message', onRedisMessage);
+				this.#connections.delete(connection);
 				if (userUpdateIntervalId) clearInterval(userUpdateIntervalId);
 			});