●Change8

Migrating to Unstructured 0.21.0

Version 0.21.0 introduces 1 breaking change. This guide details how to update your code.

Released: 2/22/2026

1
Breaking Changes
2
Migration Steps
2
Affected Symbols

⚠️ Check Your Code

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

NLTKspaCy

Breaking Changes

●Issue #1

The dependency on NLTK has been removed. Any code relying on NLTK's downloader or specific NLTK data structures will need to be updated to use spaCy equivalents.

Migration Steps

  1. 1
    Update code to use spaCy models and APIs instead of NLTK components.
  2. 2
    Remove any explicit dependency management or calls related to NLTK data downloading.

Release Summary

Version 0.21.0 replaces the vulnerable NLTK dependency with spaCy to fix a critical RCE vulnerability (CVE-2025-14009) in the downloader mechanism.

Need More Details?

View the full release notes and all changes for Unstructured 0.21.0.

View Full Changelog