Docker Desktop won't update

I’m running 4.17.0 (99724) and the UI says I have updates, but when I click “Download Update”, nothing happens. I’ve also tried clicking “Download update…” from the system tray context menu, and that doesn’t do anything either. I’ve tried shutting down and restarting Docker, and the same thing happens. This is all after a fresh reboot. Why isn’t update working?

same for me for version 4.18. I’m on Windows 10.