# Migration Guide for v0.2 to v0.4

This is a migration guide for users of the `v0.2.*` versions of `autogen-agentchat`
to the `v0.4` version, which introduces a new set of APIs and features.
The `v0.4` version contains breaking changes. Please read this guide carefully.
We still maintain the `v0.2` version in the `0.2` branch; however,
we highly recommend you upgrade to the `v0.4` version.

```{note}
We no longer have admin access to the `pyautogen` PyPI package, and
the releases from that package are no longer from Microsoft since version 0.2.34.
To continue use the `v0.2` version of AutoGen, install it using `autogen-agentchat~=0.2`.
Please read our [clarification statement](https://github.com/microsoft/autogen/discussions/4217) regarding forks.
```