diff --git a/CHANGELOG.md b/CHANGELOG.md
index a06300656..429628878 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -12,6 +12,11 @@
 
 -->
 
+## 13.13.1 (unreleased)
+
+### Server
+- Fix: api/metaで`TypeError: JSON5.parse is not a function`エラーが発生する問題を修正
+
 ## 13.13.0
 
 ### General
diff --git a/packages/backend/src/server/api/endpoints/meta.ts b/packages/backend/src/server/api/endpoints/meta.ts
index 53d724a9d..fe68467a6 100644
--- a/packages/backend/src/server/api/endpoints/meta.ts
+++ b/packages/backend/src/server/api/endpoints/meta.ts
@@ -1,6 +1,6 @@
 import { IsNull, LessThanOrEqual, MoreThan } from 'typeorm';
 import { Inject, Injectable } from '@nestjs/common';
-import * as JSON5 from 'json5';
+import JSON5 from 'json5';
 import type { AdsRepository, UsersRepository } from '@/models/index.js';
 import { MAX_NOTE_TEXT_LENGTH } from '@/const.js';
 import { Endpoint } from '@/server/api/endpoint-base.js';