# Transitioning from Earlier Versions

## Transitioning to v3

All new features and changes when transitioning from v2 to v3 of `adapter-transformers` are described [in our release blog post for v3](https://adapterhub.ml/blog/2022/03/adapter-transformers-v3-unifying-efficient-fine-tuning/#library-updates-and-changes).

## Transitioning to v2

All new features and changes when transitioning from v1 to v2 of `adapter-transformers` are described in [the transitioning guide of v2 of this documentation](https://docs.adapterhub.ml/v2.3.0/v2_transition.html).