diff --git a/CHANGELOG.md b/CHANGELOG.md
index cd26ddc84f..47a9d48acc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -20,6 +20,7 @@
 
 ### Server
 - Fix: リモートサーバーの情報が更新できない問題を修正
+- Fix: 13.11を経験しない状態で13.12にアップデートした場合ユーザープロフィール関連の画像が消失する問題を修正
 
 ## 13.12.0
 
diff --git a/packages/backend/src/core/entities/UserEntityService.ts b/packages/backend/src/core/entities/UserEntityService.ts
index a7f62c05f7..453c1473dd 100644
--- a/packages/backend/src/core/entities/UserEntityService.ts
+++ b/packages/backend/src/core/entities/UserEntityService.ts
@@ -306,6 +306,24 @@ export class UserEntityService implements OnModuleInit {
 
 		const user = typeof src === 'object' ? src : await this.usersRepository.findOneByOrFail({ id: src });
 
+		// migration
+		if (user.avatarId != null && user.avatarUrl === null) {
+			const avatar = await this.driveFilesRepository.findOneByOrFail({ id: user.avatarId });
+			user.avatarUrl = this.driveFileEntityService.getPublicUrl(avatar, 'avatar');
+			this.usersRepository.update(user.id, {
+				avatarUrl: user.avatarUrl,
+				avatarBlurhash: avatar.blurhash,
+			});
+		}
+		if (user.bannerId != null && user.bannerUrl === null) {
+			const banner = await this.driveFilesRepository.findOneByOrFail({ id: user.bannerId });
+			user.bannerUrl = this.driveFileEntityService.getPublicUrl(banner);
+			this.usersRepository.update(user.id, {
+				bannerUrl: user.bannerUrl,
+				bannerBlurhash: banner.blurhash,
+			});
+		}
+
 		const meId = me ? me.id : null;
 		const isMe = meId === user.id;
 		const iAmModerator = me ? await this.roleService.isModerator(me as User) : false;