diff --git a/app/javascript/mastodon/locales/en.json b/app/javascript/mastodon/locales/en.json
index 9a6c8e189..8b3302ecb 100644
--- a/app/javascript/mastodon/locales/en.json
+++ b/app/javascript/mastodon/locales/en.json
@@ -311,6 +311,15 @@
   "navigation_bar.preferences": "Preferences",
   "navigation_bar.public_timeline": "Federated timeline",
   "navigation_bar.security": "Security",
+  "navigation_bar.short.community_timeline": "LTL",
+  "navigation_bar.short.getting_started": "Started",
+  "navigation_bar.short.home": "Home",
+  "navigation_bar.short.lists": "Lists",
+  "navigation_bar.short.logout": "Logout",
+  "navigation_bar.short.notifications": "Notif.",
+  "navigation_bar.short.preferences": "Pref.",
+  "navigation_bar.short.public_timeline": "FTL",
+  "navigation_bar.short.search": "Search",
   "notification.admin.sign_up": "{name} signed up",
   "notification.favourite": "{name} favourited your post",
   "notification.follow": "{name} followed you",
diff --git a/app/javascript/mastodon/locales/ja.json b/app/javascript/mastodon/locales/ja.json
index 51028efae..4ce017b4c 100644
--- a/app/javascript/mastodon/locales/ja.json
+++ b/app/javascript/mastodon/locales/ja.json
@@ -318,6 +318,16 @@
   "navigation_bar.public_timeline": "連合タイムライン",
   "navigation_bar.security": "セキュリティ",
   "navigation_bar.announcements": "運営からのお知らせ",
+  "navigation_bar.trends": "トレンド",
+  "navigation_bar.short.community_timeline": "ローカル",
+  "navigation_bar.short.getting_started": "スタート",
+  "navigation_bar.short.home": "ホーム",
+  "navigation_bar.short.lists": "リスト",
+  "navigation_bar.short.logout": "ログアウト",
+  "navigation_bar.short.notifications": "通知",
+  "navigation_bar.short.preferences": "設定",
+  "navigation_bar.short.public_timeline": "連合",
+  "navigation_bar.short.search": "検索",
   "notification.admin.sign_up": "{name} がサインアップしました",
   "notification.favourite": "{name}さんがあなたの投稿に╰( ^o^)╮-=ﾆ=一＝三★しました",
   "notification.follow": "{name}さんにフォローされました",