diff --git a/src/i18n/ja_pedantic.json b/src/i18n/ja_pedantic.json
index ed3924bbbd74a55deff50d44ac08836a693d831f..9074f4bf8e029a30f905e4b06220cceb015a7a46 100644
--- a/src/i18n/ja_pedantic.json
+++ b/src/i18n/ja_pedantic.json
@@ -716,7 +716,13 @@
     "hide_repeats": "リピートを隠す",
     "message": "メッセージ",
     "hidden": "隠す",
-    "bot": "bot"
+    "bot": "bot",
+    "highlight": {
+      "solid": "背景を単色にする",
+      "striped": "背景を縞模様にする",
+      "side": "端に線を付ける",
+      "disabled": "強調しない"
+    }
   },
   "user_profile": {
     "timeline_title": "ユーザータイムライン",