Unless you want to help out and test the most recent version, only pull from the latest tag.
If there have been no breaking changes then all you need to do is fetch the most recent tag from github and restart the bot.
Otherwise you will have to refer to the migration page.
After pulling from the remote run
pipenv install then
aerich upgrade If you are currently on a v1.x version or earlier this won't work and make sure that you read the migration page.