# Hugging Face Transformers v4.20.1 — Release & Upgrade Intelligence
- **Product:** Hugging Face Transformers (https://huggingface.co)
- **Version:** v4.20.1
- **Released:** Jun 21, 2022
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/transformers/updates/v4.20.1/

## Executive Summary (TL;DR)
Hugging Face Transformers v4.20.1. Source highlight: This patch releases fixes a bug in the OPT models and makes Transformers compatible with `huggingface_hub` version 0.8.1.

## New Features
- Add final_layer_norm to OPT model #17785

## Upgrade Command
```bash
python -m pip install 'transformers==4.20.1'
```