When updating Plucky, do not uninstall your existing Plucky installation first. If you do, you will lose your accumulated Plucky settings. Instead, just install right on top of it.
Method 1: the update button
Click the Plucky button in your browser. If you see a notice that you should update, click the button. Then restart your browser. To verify you have the new version of Plucky, look at the version shown at the bottom of a Plucky page, or invoke
pluck version in a console window. Some users have reported they had to restart their browser twice with some Plucky updates.