# Saleor 3.22.21 — Release & Upgrade Intelligence
- **Product:** Saleor (https://saleor.io)
- **Version:** 3.22.21
- **Released:** Dec 17, 2025
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/saleor/updates/3.22.21/

## Executive Summary (TL;DR)
Saleor 3.22.21. Source highlight: Improve attribute fetching in `AttributeAssignmentMixin`

## Improvements
- Improve attribute fetching in `AttributeAssignmentMixin`
- Lock User object for an update to prevent requests performed at a similar time collide and overwrite changes