What’s New in Claude Code 2.1.305 and 2.1.306

Two Claude Code releases landed back to back. Here are the parts I care about.

2.1.305

• New sandbox.allowNestedUserNamespaces lets sandboxed Linux commands create user namespaces (Chromium, rootless podman). The notes warn this lets them get around the sandbox’s file protections, so only turn it on if you need it.
• Unattended retry mode can now notice when a usage limit lifts before its reset.
• Fixes a 2.1.304 regression where every request failed on Vertex, Bedrock and gateways that reject tool search. It now retries without it.
• Bash on a full disk now says the disk is full and that nothing ran.
• Fixes for worktrees in bare repos, subagent fallback model names, and MCP server name clashes.

2.1.306

• Fixes claude -p in cloud sessions saying “Not logged in.”
• Fixes a “prompt is too long” error and an unneeded compaction in sessions with lots of MCP tools.

My take

If you’re on Vertex or behind a gateway, update right away.

Have a blessed day! And Happy Hacking!

References & Further Reading

• Claude Code v2.1.305 release notes (GitHub)
• Claude Code v2.1.306 release notes (GitHub)