Claude Code v2.1.15 Release Notes
Claude Code v2.1.15 brings improved performance, better npm installation guidance, and fixes for context warnings and MCP server timeouts.
The Claude Code development team has released version 2.1.15, delivering important improvements to performance, installation processes, and stability fixes that will enhance your development workflow.
What’s New
Improved Installation Guidance
Claude Code now displays deprecation notifications for npm installations, guiding users toward the recommended claude install command. This change helps ensure users are following the most current and supported installation methods. For complete installation options, check out the updated getting started documentation.
Enhanced UI Performance
This release introduces React Compiler optimizations that significantly improve UI rendering performance. Users should notice smoother interactions and more responsive interface elements throughout the application.
Context Warning Fix
Fixed an issue where the “Context left until auto-compact” warning would persist even after running the /compact command. The warning now properly disappears once the compaction process completes, providing clearer feedback about your context status.
MCP Server Stability
Resolved a critical issue with MCP stdio server timeouts that could cause child processes to remain active, potentially leading to UI freezes. The timeout mechanism now properly terminates child processes, ensuring better application stability.
How to Update
To update to Claude Code v2.1.15, use the recommended installation method:
claude installFor users still using npm installations, consider migrating to the official installer for the best experience.