# Hugging Face Transformers v4.5.1 — Release & Upgrade Intelligence
- **Product:** Hugging Face Transformers (https://huggingface.co)
- **Version:** v4.5.1
- **Released:** Apr 13, 2021
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/transformers/updates/v4.5.1/

## Executive Summary (TL;DR)
Hugging Face Transformers v4.5.1. Source highlight: Fix `pipeline` when used with private models (#11123)

## Bug Fixes
- Fix `pipeline` when used with private models (#11123)
- Fix loading an architecture in an other (#11207)

## Upgrade Command
```bash
python -m pip install 'transformers==4.5.1'
```