Claude Code 2.1.216 release notes

Version

2.1.216

Released

20 July 2026

Status

Stable release

What's new in Claude Code 2.1.216

The official notes for Claude Code 2.1.216 list 40 changes: 1 new feature, 28 fixes, 1 security change and 10 other changes.

• 1 new feature
• 28 fixes
• 1 security change
• 10 other changes

Highlights

• security change Fixed MCP re-authenticate revoking working credentials before the new sign-in succeeds, and the reconnect needs-auth message in background sessions pointing…
• new feature Added sandbox.filesystem.disabled setting to skip filesystem isolation while keeping network egress control
• fix Fixed a slowdown in long sessions where message normalization cost grew quadratically with the number of turns, causing multi-second stalls…
• fix Fixed auto mode denying commands with "HTTP 401" classifier errors after the OAuth token expired or rotated mid-session
• fix Fixed AskUserQuestion telling Claude to continue even when your answer asked it to wait or explain first — free-text answers…

Our short summary: changes are counted and classified automatically from the official notes, and highlights are shortened. The complete, authoritative list is in the official release notes on GitHub.

Full release notes on GitHub (Claude Code 2.1.216)

All Claude Code release notes · All releases

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