ReleasesClaude Code version history

Claude Code 2.1.274

Released

Claude Code 2.1.274 was released on September 17, 2026 with 108 documented changes.

What changed in Claude Code 2.1.274?

In our words, from the release notes — never copied.

  • Users now receive a visible warning and guidance when memory usage becomes critically high.
  • Previously stuck sessions due to 'unexpected tool_use_id' errors are now fixed, with corrupted transcripts either self-healing or providing a clear error message.
  • Multiple improvements were made to Claude's integration with various platforms, including VS Code, Claude Code on the web, and Claude Tag for Slack, addressing UI, stability, and connectivity issues.
  • Core Claude functionality saw fixes for agent and tool management, ensuring more reliable behavior for prompts, resource refreshing, and handling specific tool call errors.
  • Startup and connection stability have been enhanced across the application, with improvements to database connection retries and management of internal servers.
  • The Code Review feature received updates for clearer finding descriptions, improved reliability during transient errors, and better handling of organization limits.

Is this the latest version?

This page is frozen to Claude Code 2.1.274 and stays at this address. The Claude Code version history always lists the newest tracked version first.

Summarized by Claude Network from GitHub. Last verified .