●Change8

Migrating to Transformers v5.6.0

Version v5.6.0 introduces 1 breaking change. This guide details how to update your code.

Released: 4/22/2026

1
Breaking Changes
1
Migration Steps
12
Affected Symbols

⚠️ Check Your Code

If you use any of these symbols, you need to read this guide:

Attention module (internal rotary_fn)Qwen2.5-VLEmu3 image processorBLIP image processorPeVideo model encoderPeAudioVideo model encoderRouterParallel (Expert Parallelism)FSDP processesPP-DocLayoutV3streamer classesKimi-K2.5 tokenizerQwen3VLProcessor

Breaking Changes

●Issue #1

The internal `rotary_fn` is no longer registered as a hidden kernel function. Code referencing `self.rotary_fn(...)` within an Attention module must be updated to call the function directly instead.

Migration Steps

  1. 1
    Update any code referencing `self.rotary_fn(...)` within an Attention module to call the function directly instead of through `self.rotary_fn`.

Release Summary

Version 5.6.0 introduces four new models: OpenAI Privacy Filter, Qianfan-OCR, SAM3-LiteText, and SLANet. This release also significantly enhances `transformers serve` with new endpoints and multimodal support, alongside several critical fixes in vision, parallelization, and tokenization.

Need More Details?

View the full release notes and all changes for Transformers v5.6.0.

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