Hugging Face Transformers: v4.22.1: Patch release:

Source available — automated, not human-reviewed

Component: transformers · Channel: stable. Automated analysis, not a compatibility certification. How this works.

Analysis updated: 2026-11-01.

Compatibility not verified — check source notes

$ python -m pip install 'transformers==4.22.1'

📄 .MD

🔧 Bug Fixes 2

⚡ Executive Summary (TL;DR)

Hugging Face Transformers v4.22.1. Source highlight: Patch release for the following PRs:

Visit Hugging Face Transformers Official Site ↗ Official Release Source ↗ All Hugging Face Transformers Releases 📡 Hugging Face Transformers RSS

Who Does This Impact? (Role-Based Analysis)

💻 Software Engineers & Devs

Check the source notes against the package and APIs you use before upgrading.

📊 Product & Engineering Leads

Use the documented changes to assess relevance to your product; release frequency alone is not a quality measure.

⚙️ DevOps & Security

Verify the target version, runtime requirements and rollback procedure in the official documentation.

🔧 Bug Fixes & Patches (2)

Add tests for legacy load by url and fix bugs (#19078)
Fix tokenizer load from one file (#19073)

📄 View Raw Release Notes (Original Developer Log)

Patch release for the following PRs: - [Add tests for legacy load by url and fix bugs (](https://github.com/huggingface/transformers/commit/654c584f388ac160db83071d751e9dead4887d82)[#19078](https://github.com/huggingface/transformers/pull/19078)[)](https://github.com/huggingface/transformers/commit/654c584f388ac160db83071d751e9dead4887d82) - [Note about developer mode (](https://github.com/huggingface/transformers/commit/6d034d58c583dcf4299c8a34f949ace046ac0208)[#19075](https://github.com/huggingface/transformers/pull/19075)[)](https://github.com/huggingface/transformers/commit/6d034d58c583dcf4299c8a34f949ace046ac0208) - [Fix tokenizer load from one file (](https://github.com/huggingface/transformers/commit/af20bbb3188a6ffeaa126fa5118c9cabb529c26a)[#19073](https://github.com/huggingface/transformers/pull/19073)[)](https://github.com/huggingface/transformers/commit/af20bbb3188a6ffeaa126fa5118c9cabb529c26a) - [Fixing OPT fast tokenizer option. (](https://github.com/huggingface/transformers/commit/1504b5311a3ee62bd820ac31b4ec2feffb2845f3)[#18753](https://github.com/huggingface/transformers/pull/18753)[)](https://github.com/huggingface/transformers/commit/1504b5311a3ee62bd820ac31b4ec2feffb2845f3) - [Move cache: expand error message (](https://github.com/huggingface/transformers/commit/defd039bae9f44f6c7a847ed8f5d3609f6667540)[#19051](https://github.com/huggingface/transformers/pull/19051)[)](https://github.com/huggingface/transformers/commit/defd039bae9f44f6c7a847ed8f5d3609f6667540)

← Older Version Hugging Face Transformers v4.22.0 Newer Version → Hugging Face Transformers v4.22.2