diff --git a/html/src/localization/ja/en.json b/html/src/localization/ja/en.json
index 24f06a50..977c9f1d 100644
--- a/html/src/localization/ja/en.json
+++ b/html/src/localization/ja/en.json
@@ -765,8 +765,8 @@
                 "popularity": "人気度",
                 "created_at": "作成日時",
                 "last_updated": "最終更新日時",
-                "publication_date": "公開日",
-                "labs_publication_date": "ラボへの公開日",
+                "publication_date": "公開日時",
+                "labs_publication_date": "ラボへの公開日時",
                 "time_in_labs": "ラボにいた時間:",
                 "version": "バージョン",
                 "platform": "プラットフォーム",