ToolClaudeClaude Code

Anthropic updates Claude Code to version 2.1.309

Original title: Claude Code 2.1.309

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What it is: Anthropic released version 2.1.309 of Claude Code. This update includes many bug fixes, performance improvements, and usability updates across different platforms and integrations.
How it works: The update automatically resolves issues with file permissions, command-line behaviors, and integrations with other tools. Users get faster performance and fewer errors when running commands or editing files.
Where it is available: The update applies to Claude Code on macOS, Linux, and Windows, as well as its integrations in VS Code, Slack, and cloud sessions.
Example: For example, it fixes an issue where Claude in Slack would mistakenly post an approved draft into a direct message instead of the designated channel.

What it is: Claude Code version 2.1.309 has been released with numerous bug fixes, security sandbox corrections, and performance optimizations. Key updates address sandbox escapes, symlink handling, and git operations.
How it works: It fixes sandboxed Bash commands running startup files outside the sandbox on macOS and Linux. It also improves the speed of git commands on Windows and reduces the wait time for new problems after edits in the VS Code chat panel to 0.75 seconds.
Where it is available: The changes apply to the Claude Code CLI on macOS, Linux, and Windows, the VS Code extension, Claude Tag for Slack, and cloud-hosted sessions.
Example: For example, macOS sandbox denyWrite glob patterns now apply correctly at a path's real location even when the folder is accessed through a symlink.

The headline and explanation on this page are based on Anthropic's post. The full details are in the original.

Claude Code 2.1.309