Skip to main content

Claude Code v2.1.34 Release Notes

Claude Code v2.1.34 delivers critical stability fixes for agent teams and sandbox security improvements for power users.

February 6, 2026 10 min read By ClaudeWorld

The Claude Code development team has released version 2.1.34, focusing on essential stability improvements and security enhancements that will make your development workflow more reliable and secure.

What’s New

Agent Teams Stability Fix

This release resolves a critical crash that occurred when agent teams settings were modified between renders. This fix ensures smoother team collaboration and prevents unexpected interruptions during multi-agent development sessions.

Enhanced Sandbox Security

We’ve addressed a significant security vulnerability in the sandboxing system. Previously, commands excluded from sandboxing (through sandbox.excludedCommands or dangerouslyDisableSandbox settings) could incorrectly bypass the Bash ask permission rule when autoAllowBashIfSandboxed was enabled. This fix strengthens the permission system and ensures proper security protocols are maintained.

How to Update

To update to Claude Code v2.1.34:

  1. Check your current version: claude-code --version
  2. Update using your package manager or download the latest release
  3. Restart your development environment
  4. Verify the update: claude-code --version