diff --git a/translations/ja_JP/21.1/upgrading.po b/translations/ja_JP/21.1/upgrading.po
index b381f62c8..78a952961 100644
--- a/translations/ja_JP/21.1/upgrading.po
+++ b/translations/ja_JP/21.1/upgrading.po
@@ -1,12 +1,12 @@
 # 
 # Translators:
 # jic_m_mito <jic-m-mito@nri.co.jp>, 2023
-# Kohei Tamura <ktamura.biz.80@gmail.com>, 2023
 # Hiroyuki Wada <wadahiro@gmail.com>, 2023
+# Kohei Tamura <ktamura.biz.80@gmail.com>, 2024
 # 
 msgid ""
 msgstr ""
-"Last-Translator: Hiroyuki Wada <wadahiro@gmail.com>, 2023\n"
+"Last-Translator: Kohei Tamura <ktamura.biz.80@gmail.com>, 2024\n"
 "Language-Team: Japanese (Japan) (https://app.transifex.com/openstandia/teams/79437/ja_JP/)\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Language: ja_JP\n"
@@ -2896,9 +2896,8 @@ msgid ""
 "link:{adminguide_link}#_read_only_user_attributes[Threat model mitigation "
 "chapter]."
 msgstr ""
-"See the details in the "
-"link:{adminguide_link}#_read_only_user_attributes[Threat model mitigation "
-"chapter] 。"
+"詳しくは、 link:{adminguide_link}#_read_only_user_attributes[Read-only user "
+"attributesの章]を参照してください。"
 
 msgid "Valid Request URIs"
 msgstr "Valid Request URIs"