Claude Code 2.1.309 fixes shell startup files running outside the sandbox on macOS/Linux, symlinked write-rule gaps and changes to protected MCP configuration.

Claude Code’s original v2.1.309 release notes list sandbox startup-file, symlink, MCP configuration and permission-check fixes.

Published 23 Oct 2026 · 10:38 UTC

Claude Code release notes ↗ · Source dated 22 Oct 2026

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