MIUI's Updater app doesn't detect the latest update. It says "You already up to date"


Aug 5, 2018
I have a Mi 8 with ROM 8.9.13.
In the MIUI updater app, I press the "Check" button to look for the latest update. However, the app does not download the latest update and just says "You already up to date". There are several newer updates after 8.9.13 which I have such as 8.9.20, 8.9.24, and the latest one 9.10.11. Why does the Updater app say I have the latest version? How can I fix it?

Here is a screenshot you can click: