diff --git a/src/frontend/components/AnnouncementList.tsx b/src/frontend/components/AnnouncementList.tsx
index 6ea71ba..8a01e03 100644
--- a/src/frontend/components/AnnouncementList.tsx
+++ b/src/frontend/components/AnnouncementList.tsx
@@ -1,4 +1,5 @@
 import React, { useEffect, useState } from 'react';
+import { useTranslation } from 'react-i18next';
 import { Link } from 'react-router-dom';
 
 import { IAnnouncement } from '../../common/types/announcement';
@@ -7,6 +8,7 @@ import { Card } from './Card';
 
 export const AnnouncementList: React.VFC = () => {
 	const [announcements, setAnnouncements] = useState<IAnnouncement[]>([]);
+	const {t} = useTranslation();
 
 	const fetchAllAnnouncements = () => {
 		setAnnouncements([]);
@@ -23,7 +25,7 @@ export const AnnouncementList: React.VFC = () => {
 
 	return (
 		<Card>
-			<h1>お知らせ</h1>
+			<h1>{t('announcements')}</h1>
 			<div className="large menu fade">
 				{announcements.map(a => (
 					<Link className="item fluid" key={a.id} to={`/announcements/${a.id}`}>
diff --git a/src/frontend/components/MisshaiPage.tsx b/src/frontend/components/MisshaiPage.tsx
index 3736f6d..f72671b 100644
--- a/src/frontend/components/MisshaiPage.tsx
+++ b/src/frontend/components/MisshaiPage.tsx
@@ -73,7 +73,7 @@ export const MisshaiPage: React.VFC = () => {
 				dispatch(showModal({
 					type: 'dialog',
 					icon: 'error',
-					message: 'エラー'
+					message: t('error'),
 				}));
 				dispatchDraft(previousDraft);
 			});
@@ -84,7 +84,7 @@ export const MisshaiPage: React.VFC = () => {
 			.then(() => dispatch(showModal({
 				type: 'dialog',
 				icon: 'info',
-				message: '保存しました。'
+				message: t('saved'),
 			})));
 	}, [updateSetting]);
 
diff --git a/src/frontend/langs/ja-JP.json b/src/frontend/langs/ja-JP.json
index dc5ff7e..5d1a927 100644
--- a/src/frontend/langs/ja-JP.json
+++ b/src/frontend/langs/ja-JP.json
@@ -37,9 +37,11 @@
 	"resetToDefault": "初期値に戻す",
 	"error": "エラー",
 	"retry": "やり直す",
+	"saved": "保存しました。",
 	"disclaimerForMisskeyHq": "Misskey Toolsは、Misskey HQの公式ツールでは<b>ありません</b>。",
 	"translatedByTheCommunity": "Misskey Toolsはボランティアによって翻訳されています。",
 	"helpTranslation": "翻訳に協力する",
+	"announcements": "お知らせ",
 	"_welcomeMessage": {
 		"pattern1": "ついついノートしすぎていませんか？",
 		"pattern2": "Misskey, しすぎていませんか？",