Upgrading When major versions of Biip are released, we try to keep the upgrade path as smooth as possible. However, there are some breaking changes that you need to consider when upgrading from one major version to another. Upgrading from 1.x to 2.x Upgrading from 2.x to 3.x Upgrading from 3.x to 4.x Upgrading from 4.x to 5.x