diff --git a/packages/backend/src/core/FanoutTimelineEndpointService.ts b/packages/backend/src/core/FanoutTimelineEndpointService.ts
index f257e10d7a..34c45d9f80 100644
--- a/packages/backend/src/core/FanoutTimelineEndpointService.ts
+++ b/packages/backend/src/core/FanoutTimelineEndpointService.ts
@@ -84,7 +84,7 @@ export class FanoutTimelineEndpointService {
 				const remainingToRead = ps.limit - redisTimeline.length;
 
 				// DBからの取り直しを減らす初回と同じ割合以上で成功すると仮定するが、クエリの長さを考えて三倍まで
-				const countToGet = remainingToRead * Math.ceil(Math.min(1 / lastSuccessfulRate, 3));
+				const countToGet = remainingToRead * Math.ceil(Math.min(1.1 / lastSuccessfulRate, 3));
 				noteIds = redisResultIds.slice(readFromRedis, readFromRedis + countToGet);
 
 				readFromRedis += noteIds.length;