# LangChain langchain==0.3.21 — Release & Upgrade Intelligence
- **Product:** LangChain (https://langchain.com)
- **Version:** langchain==0.3.21
- **Released:** Mar 18, 2025
- **Impact Score:** 5/10
- **Breaking Changes:** Not verified
- **Canonical Analysis:** https://changelogs.us/langchain/updates/langchain-0.3.21/

## Executive Summary (TL;DR)
LangChain langchain==0.3.21. Source highlight: Changes since langchain==0.3.20