# Hugging Face Transformers v4.2.2 — Release & Upgrade Intelligence
- **Product:** Hugging Face Transformers (https://huggingface.co)
- **Version:** v4.2.2
- **Released:** Jan 21, 2021
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/transformers/updates/v4.2.2/

## Executive Summary (TL;DR)
Hugging Face Transformers v4.2.2. Source highlight: This patch contains two fixes:

## Bug Fixes
- [TF Led] Fix wrong decoder attention mask behavior #9601 (@patrickvonplaten )
- Fix imports in conversion scripts #9674 (@sgugger)

## Upgrade Command
```bash
python -m pip install 'transformers==4.2.2'
```