# Hugging Face Transformers v4.11.1 — Release & Upgrade Intelligence
- **Product:** Hugging Face Transformers (https://huggingface.co)
- **Version:** v4.11.1
- **Released:** Sep 29, 2021
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/transformers/updates/v4.11.1/

## Executive Summary (TL;DR)
Hugging Face Transformers v4.11.1. Source highlight: v4.11.1: Patch release

## Bug Fixes
- [Wav2Vec2] Better error message (#13777)
- Fix LayoutLM ONNX test error (#13710)
- Fix warning for gradient_checkpointing (#13767)
- Implement len in IterableDatasetShard (#13780)
- Fix length of IterableDatasetShard and add test (#13792)

## Upgrade Command
```bash
python -m pip install 'transformers==4.11.1'
```