# Hugging Face Transformers v5.12.1 — Release & Upgrade Intelligence
- **Product:** Hugging Face Transformers (https://huggingface.co)
- **Version:** v5.12.1
- **Released:** Jun 15, 2026
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/transformers/updates/v5.12.1/

## Executive Summary (TL;DR)
Hugging Face Transformers v5.12.1. Source highlight: Patch release v5.12.1

## Bug Fixes
- Fix `peft` lower bound #46605 by @hmellor (#46605)
- mistral common backend fix #46667 by @itazap (#46667)

## Upgrade Command
```bash
python -m pip install 'transformers==5.12.1'
```