diff --git a/packages/backend/src/core/UserSuspendService.ts b/packages/backend/src/core/UserSuspendService.ts
index 7920e58e36..ea23cd8ca4 100644
--- a/packages/backend/src/core/UserSuspendService.ts
+++ b/packages/backend/src/core/UserSuspendService.ts
@@ -10,11 +10,11 @@ import type { MiUser } from '@/models/User.js';
 import { QueueService } from '@/core/QueueService.js';
 import { GlobalEventService } from '@/core/GlobalEventService.js';
 import { DI } from '@/di-symbols.js';
-import { ApRendererService } from '@/core/activitypub/ApRendererService.js';
 import { UserEntityService } from '@/core/entities/UserEntityService.js';
 import { bindThis } from '@/decorators.js';
 import { RelationshipJobData } from '@/queue/types.js';
 import { ModerationLogService } from '@/core/ModerationLogService.js';
+import { AccountUpdateService } from '@/core/AccountUpdateService.js';
 
 @Injectable()
 export class UserSuspendService {
@@ -31,7 +31,7 @@ export class UserSuspendService {
 		private userEntityService: UserEntityService,
 		private queueService: QueueService,
 		private globalEventService: GlobalEventService,
-		private apRendererService: ApRendererService,
+		private accountUpadateService: AccountUpdateService,
 		private moderationLogService: ModerationLogService,
 	) {
 	}
@@ -83,28 +83,7 @@ export class UserSuspendService {
 		});
 
 		if (this.userEntityService.isLocalUser(user)) {
-			// 知り得る全SharedInboxにDelete配信
-			const content = this.apRendererService.addContext(this.apRendererService.renderDelete(this.userEntityService.genLocalUserUri(user.id), user));
-
-			const queue: string[] = [];
-
-			const followings = await this.followingsRepository.find({
-				where: [
-					{ followerSharedInbox: Not(IsNull()) },
-					{ followeeSharedInbox: Not(IsNull()) },
-				],
-				select: ['followerSharedInbox', 'followeeSharedInbox'],
-			});
-
-			const inboxes = followings.map(x => x.followerSharedInbox ?? x.followeeSharedInbox);
-
-			for (const inbox of inboxes) {
-				if (inbox != null && !queue.includes(inbox)) queue.push(inbox);
-			}
-
-			for (const inbox of queue) {
-				this.queueService.deliver(user, content, inbox, true);
-			}
+			this.accountUpadateService.publishToFollowers(user.id);
 		}
 	}
 
@@ -113,28 +92,7 @@ export class UserSuspendService {
 		this.globalEventService.publishInternalEvent('userChangeSuspendedState', { id: user.id, isSuspended: false });
 
 		if (this.userEntityService.isLocalUser(user)) {
-			// 知り得る全SharedInboxにUndo Delete配信
-			const content = this.apRendererService.addContext(this.apRendererService.renderUndo(this.apRendererService.renderDelete(this.userEntityService.genLocalUserUri(user.id), user), user));
-
-			const queue: string[] = [];
-
-			const followings = await this.followingsRepository.find({
-				where: [
-					{ followerSharedInbox: Not(IsNull()) },
-					{ followeeSharedInbox: Not(IsNull()) },
-				],
-				select: ['followerSharedInbox', 'followeeSharedInbox'],
-			});
-
-			const inboxes = followings.map(x => x.followerSharedInbox ?? x.followeeSharedInbox);
-
-			for (const inbox of inboxes) {
-				if (inbox != null && !queue.includes(inbox)) queue.push(inbox);
-			}
-
-			for (const inbox of queue) {
-				this.queueService.deliver(user as any, content, inbox, true);
-			}
+			this.accountUpadateService.publishToFollowers(user.id);
 		}
 	}