keep someone posted

US /kiːp ˈsʌm.wʌn ˈpoʊ.stɪd/
UK /kiːp ˈsʌm.wʌn ˈpoʊ.stɪd/
"keep someone posted" picture
1.

随時知らせる, 最新情報を伝える

to regularly give someone the most recent information about something

:
Please keep me posted on your progress with the project.
プロジェクトの進捗状況を随時教えてください
I'll keep you posted if anything changes.
何か変更があれば随時お知らせします