diff --git a/packages/backend/src/core/FanoutTimelineService.ts b/packages/backend/src/core/FanoutTimelineService.ts
index f6dabfadcd..ca33556fa4 100644
--- a/packages/backend/src/core/FanoutTimelineService.ts
+++ b/packages/backend/src/core/FanoutTimelineService.ts
@@ -14,9 +14,9 @@ export type FanoutTimelineName =
 	| `homeTimeline:${string}`
 	| `homeTimelineWithFiles:${string}` // only notes with files are included
 	// local timeline
-	| `localTimeline` // replies are not included
-	| `localTimelineWithFiles` // only non-reply notes with files are included
-	| `localTimelineWithReplies` // only replies are included
+	| 'localTimeline' // replies are not included
+	| 'localTimelineWithFiles' // only non-reply notes with files are included
+	| 'localTimelineWithReplies' // only replies are included
 	| `localTimelineWithReplyTo:${string}` // Only replies to specific local user are included. Parameter is reply user id.
 
 	// antenna
@@ -111,4 +111,33 @@ export class FanoutTimelineService {
 	public purge(name: FanoutTimelineName) {
 		return this.redisForTimelines.del('list:' + name);
 	}
+
+	@bindThis
+	public async purgeAllcache() {
+		const timeLinePatterns = [
+			'*list:homeTimeline*',
+			'*list:localTimeline*',
+			'*list:antennaTimeline*',
+			'*list:userTimeline*',
+			'*list:userListTimeline*',
+			'*list:channelTimeline*',
+			'*list:roleTimeline*',
+		];
+		let timeLines = [] as string[];
+
+		for (const timeline of timeLinePatterns) {
+			let cursor = '0';
+			do {
+				const scanResult = await this.redisForTimelines.scan(cursor, 'MATCH', timeline, 'COUNT', 300);
+				cursor = scanResult[0];
+				timeLines = timeLines.concat(scanResult[1]);
+			} while (cursor !== '0');
+		}
+
+		const pipeline = this.redisForTimelines.pipeline();
+		for (const timeLine of timeLines) {
+			pipeline.del(`list:${timeLine.split('list:')[1]}`);
+		}
+		await pipeline.exec();
+	}
 }
diff --git a/packages/backend/src/core/MetaService.ts b/packages/backend/src/core/MetaService.ts
index 3d88d0aefe..02928642de 100644
--- a/packages/backend/src/core/MetaService.ts
+++ b/packages/backend/src/core/MetaService.ts
@@ -12,6 +12,7 @@ import { GlobalEventService } from '@/core/GlobalEventService.js';
 import { bindThis } from '@/decorators.js';
 import type { GlobalEvents } from '@/core/GlobalEventService.js';
 import { FeaturedService } from '@/core/FeaturedService.js';
+import { FanoutTimelineService } from './FanoutTimelineService.js';
 import type { OnApplicationShutdown } from '@nestjs/common';
 
 @Injectable()
@@ -28,6 +29,7 @@ export class MetaService implements OnApplicationShutdown {
 
 		private featuredService: FeaturedService,
 		private globalEventService: GlobalEventService,
+		private fanoutTimelineService: FanoutTimelineService,
 	) {
 		//this.onMessage = this.onMessage.bind(this);
 
@@ -112,6 +114,7 @@ export class MetaService implements OnApplicationShutdown {
 			before = metas[0];
 
 			if (before) {
+				if (before.enableFanoutTimeline === true && data.enableFanoutTimeline === false) this.fanoutTimelineService.purgeAllcache();
 				await transactionalEntityManager.update(MiMeta, before.id, data);
 
 				const metas = await transactionalEntityManager.find(MiMeta, {