diff --git a/packages/backend/src/core/AccountMoveService.ts b/packages/backend/src/core/AccountMoveService.ts
index 381e3f3435..77757e0f20 100644
--- a/packages/backend/src/core/AccountMoveService.ts
+++ b/packages/backend/src/core/AccountMoveService.ts
@@ -70,14 +70,18 @@ export class AccountMoveService {
 	 */
 	@bindThis
 	public async moveFromLocal(src: LocalUser, dst: LocalUser | RemoteUser): Promise<unknown> {
+		const srcUri = this.userEntityService.getUserUri(src);
 		const dstUri = this.userEntityService.getUserUri(dst);
 
 		// add movedToUri to indicate that the user has moved
-		const update = {} as Partial<User>;
+		const update = {} as Partial<LocalUser>;
 		update.alsoKnownAs = src.alsoKnownAs?.includes(dstUri) ? src.alsoKnownAs : src.alsoKnownAs?.concat([dstUri]) ?? [dstUri];
 		update.movedToUri = dstUri;
 		await this.usersRepository.update(src.id, update);
-		src = Object.assign(src, update);
+		Object.assign(src, update);
+
+		// Update cache
+		this.cacheService.uriPersonCache.set(srcUri, src);
 
 		const srcPerson = await this.apRendererService.renderPerson(src);
 		const updateAct = this.apRendererService.addContext(this.apRendererService.renderUpdate(srcPerson, src));
@@ -101,14 +105,13 @@ export class AccountMoveService {
 			to: { id: following.followeeId },
 		})));
 
-		// Move!
-		await this.move(src, dst);
+		await this.postMoveProcess(src, dst);
 
 		return iObj;
 	}
 
 	@bindThis
-	public async move(src: User, dst: User): Promise<void> {
+	public async postMoveProcess(src: User, dst: User): Promise<void> {
 		// Copy blockings and mutings, and update lists
 		try {
 			await Promise.all([
diff --git a/packages/backend/src/core/activitypub/ApInboxService.ts b/packages/backend/src/core/activitypub/ApInboxService.ts
index e98e7a3d8f..d3925aeaf6 100644
--- a/packages/backend/src/core/activitypub/ApInboxService.ts
+++ b/packages/backend/src/core/activitypub/ApInboxService.ts
@@ -744,7 +744,7 @@ export class ApInboxService {
 		if (!targetUri) return 'skip: invalid activity target';
 		await Promise.all([
 			this.apPersonService.updatePerson(targetUri),
-			this.apPersonService.updatePerson(actor.uri),
+			this.apPersonService.updatePerson(actor.uri), // actor may cached for a day or more
 		]);
 		const [newAccount, oldAccount] = await Promise.all([
 			this.apPersonService.resolvePerson(targetUri),
@@ -774,7 +774,7 @@ export class ApInboxService {
 		}
 
 		// Move!
-		await this.accountMoveService.move(oldAccount, newAccount);
+		await this.accountMoveService.postMoveProcess(oldAccount, newAccount);
 
 		return 'ok';
 	}
diff --git a/packages/backend/src/queue/processors/InboxProcessorService.ts b/packages/backend/src/queue/processors/InboxProcessorService.ts
index ada6f9e967..ab8b1e9e22 100644
--- a/packages/backend/src/queue/processors/InboxProcessorService.ts
+++ b/packages/backend/src/queue/processors/InboxProcessorService.ts
@@ -84,9 +84,9 @@ export class InboxProcessorService {
 
 		// HTTP-Signature keyIdを元にDBから取得
 		let authUser: {
-		user: RemoteUser;
-		key: UserPublickey | null;
-	} | null = await this.apDbResolverService.getAuthUserFromKeyId(signature.keyId);
+			user: RemoteUser;
+			key: UserPublickey | null;
+		} | null = await this.apDbResolverService.getAuthUserFromKeyId(signature.keyId);
 
 		// keyIdでわからなければ、activity.actorを元にDBから取得 || activity.actorを元にリモートから取得
 		if (authUser == null) {
diff --git a/packages/backend/src/server/api/endpoints/i/update.ts b/packages/backend/src/server/api/endpoints/i/update.ts
index c32618475c..738edf3978 100644
--- a/packages/backend/src/server/api/endpoints/i/update.ts
+++ b/packages/backend/src/server/api/endpoints/i/update.ts
@@ -350,6 +350,9 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 			//#endregion
 
 			if (Object.keys(updates).length > 0) await this.usersRepository.update(user.id, updates);
+			if (Object.keys(updates).includes('alsoKnownAs')) {
+				this.cacheService.uriPersonCache.set(this.userEntityService.genLocalUserUri(user.id), { ...user, ...updates });
+			}
 			if (Object.keys(profileUpdates).length > 0) await this.userProfilesRepository.update(user.id, profileUpdates);
 
 			const iObj = await this.userEntityService.pack<true, true>(user.id, user, {
diff --git a/packages/backend/test/e2e/move.ts b/packages/backend/test/e2e/move.ts
index d589654dcd..657934ba42 100644
--- a/packages/backend/test/e2e/move.ts
+++ b/packages/backend/test/e2e/move.ts
@@ -5,7 +5,7 @@ import rndstr from 'rndstr';
 import { loadConfig } from '@/config.js';
 import { User, UsersRepository } from '@/models/index.js';
 import { jobQueue } from '@/boot/common.js';
-import { uploadFile, signup, startServer, initTestDb, api, sleep } from '../utils.js';
+import { uploadFile, signup, startServer, initTestDb, api, sleep, successfulApiCall } from '../utils.js';
 import type { INestApplicationContext } from '@nestjs/common';
 
 describe('Account Move', () => {
@@ -346,9 +346,13 @@ describe('Account Move', () => {
 		});
 
 		test('A locked account automatically accept the follow request if it had already accepted the old account.', async () => {
-			await api('/following/create', {
-				userId: frank.id,
-			}, bob);
+			await successfulApiCall({
+				endpoint: '/following/create',
+				parameters: {
+					userId: frank.id,
+				},
+				user: bob,
+			});
 			const followers = await api('/users/followers', {
 				userId: frank.id,
 			}, frank);