provides different support levels for different versions, which may include new features, bug fixes, or security patches.

​
Support levels

There are four support levels:
  • Active
  • Critical
  • End of life (EOL)
  • Deprecated

​
Active

Where N represents the latest minor version (e.g., 0.3, 0.4, etc.). The current minor version (N) receives full support, including:
  • New features and capabilities
  • Bug fixes and regressions
  • Security patches
  • Quality-of-life improvements
  • High confidence changes that are narrowly scoped

​
Critical

The previous minor version (N-1) receives limited support:
  • Critical security fixes
  • Installation fixes
  • No new features or general bug fixes
  • Transitioned from Active when a newer minor version is released

​
End of life (EOL)

Versions older than N-2 (N-2, N-3, etc.) receive no support:
  • No new patch releases
  • No bug fixes, including known bugs
  • No security updates
  • Users should upgrade to a supported version

​
Deprecated

Versions that are no longer maintained:
  • All versions prior to the first stable release
  • Versions that have been explicitly deprecated
  • No support or maintenance provided

​
Version support policy

follows an N-2 support policy for minor versions:
  • N (Current): Active support
  • N-1: Critical support
  • N-2 and older: End of Life

​
Minor version support

Minor versions include new features and capabilities and are supported according to the N-2 policy. When we refer to a minor version, such as v0.3, we always mean its latest available patch release (v0.3.x).

​
Patch releases

During the support window for each version:
  • Active Support: Regular patch releases with bug fixes, regressions, and new features
  • Critical Support: Security-only releases for critical fixes related to security and installation
  • End of Life: No new patches released

​
Recommendations

  • Stay Current: We recommend upgrading to the latest minor version to receive full support and access to new features
  • Plan Upgrades: Monitor the changelog for upcoming version changes and plan upgrades accordingly
  • Security: Critical security fixes are only provided for Active and Critical support versions
  • Testing: Test your applications with newer versions before upgrading in production

​
Version compatibility

When upgrading between minor versions:
  • Review the changelog for breaking changes
  • Test your applications thoroughly
  • Follow the upgrade guides provided in the documentation
  • Consider the support timeline for your current version

​
Current version support

To check the current supported versions and their support levels, refer to the LangGraph Server Changelog for the latest release information.