Note: Follow the advice in this section in release order. For example, if you need to upgrade your project from 2019 to 2021, read the 2020 upgrade guides to see if there are any changes that you need to make before you read the 2021 upgrade guides.
Visit the pages below for information about upgrading to later versions of Unity.
Note: The 2019.x, 2020.x and 2021.x Tech release guides have been compiled into the LTS guides.