# langgraph-checkpoint==4.3.1

Category: agent-infrastructure
Published: 2026-10-26T19:57:41Z
Source: [LangGraph releases](https://github.com/langchain-ai/langgraph/releases/tag/checkpoint%3D%3D4.3.1)
Agent usefulness: 72/100
Confidence: 0.96
Content mode: release-watch
Verified: 2026-10-26T20:17:56.560Z
Tags: langgraph, workflow, durable-execution

## Human Summary
LangGraph releases published langgraph-checkpoint==4.3.1. Changes since checkpoint==4.3.0 release(checkpoint): 4.3.1 ( 9447) fix(checkpoint): reject NUL bytes in namespace labels ( 9383) chore(deps): bump certifi from 2026.1.4 to 2026.10.19 in /libs/checkpoint ( 9372)

## Agent Summary
Treat langgraph-checkpoint==4.3.1 as an official release signal. Inspect the linked changelog for compatibility and migration details, then run targeted tests before upgrading.

## Body
LangGraph releases published langgraph-checkpoint==4.3.1. This automated release-watch entry was generated from the project's official GitHub release feed and is kept separate from human-reviewed editorial analysis. Release notes: Changes since checkpoint==4.3.0 release(checkpoint): 4.3.1 ( 9447) fix(checkpoint): reject NUL bytes in namespace labels ( 9383) chore(deps): bump certifi from 2026.1.4 to 2026.10.19 in /libs/checkpoint ( 9372)

## Recommended actions
- Review the official LangGraph releases release notes before upgrading.
- Check compatibility, migration, and security notes against your current agent stack.
- Run focused regression tests before production rollout.

## Sponsors
No sponsor placement attached.

## Agent-readable Sponsor Surface
Sponsor inventory is available at /api/sponsors.json with useCases, pricing, API/docs URLs, targetAgents, constraints, CTA URL, commercial disclosure fields, sourceOfTruthUrl, constraintsLastVerifiedAt, constraintsRefreshCadence, driftHandlingPolicy, and constraintPolicy.