Hello Takuji Tanaka, Thanks for this upload:

Package: uptex-base [found] Version: 2023-01-12 Author: Kazuki Maeda; Takuji Tanaka; Japanese TeX Development Community Location: /macros/jptex/generic/uptex-base [unmodified] License: bsd3 [unmodified]

I've installed the new version and updated the catalogue repository. The changes should become available on the mirrors within the next 24 hours. Then I will post this announcement:

Announcement: Update upTeX documents and samples based on upTeX version 1.29.

Best regards Erik Braun for the CTAN Team -- Please send messages to this mailing list in English only. Please do not send HTML messages, they are held in our Spam filter. Please do not send software to this list, use the web upload form.