Migrating to Unsloth March-2026
Version March-2026 introduces 2 breaking changes. This guide details how to update your code.
Released: 3/17/2026
⚠️ Check Your Code
If you use any of these symbols, you need to read this guide:
TRL trainer configs (related to use_reentrant removal)_get_per_token_logps_and_entropies (VLM GRPO fix)llm_int8_skip_modules (VLM fix)Breaking Changes
●Issue #1
Removed Blackwell flex attention disable workaround from studio. Users on Blackwell GPUs might need to verify performance or configuration if they relied on this workaround.
●Issue #2
The `use_reentrant` parameter removal was applied to all TRL trainer configs. Code relying on this parameter in TRL trainers may need updates.
Migration Steps
- 1If using TRL trainers, review usage of the `use_reentrant` parameter as it has been removed.
Release Summary
This release introduces Unsloth Studio, a new open-source web UI for training and running LLMs locally, alongside significant performance improvements and broad model support including Mixtral and ROCM.
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View the full release notes and all changes for Unsloth March-2026.
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