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Sweep 27 Oct 2026 · 19:04Z Build v2.1.312 531 read Stable v2.1.308 Latest v2.1.312 Next v2.1.312 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.311 ·

Clearer certificate errors and no duplicate NODE_EXTRA_CA_CERTS entries

Claude Code now explains when no usable CA certificate is found, and stops re-adding NODE_EXTRA_CA_CERTS certificates that are already trusted

You'll notice Improvements
JSON All of v2.1.311
You'll noticeTier: how much it should matter to you
2Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
Network ProxyArea: what it touches
ImprovementsKind: in v2.1.311,
ImprovementsSection of the release
What

CA certificates tell Claude Code which secure connections to trust. Two new error messages appear when it cannot find one to use:

  • "No certificate authority to trust: no usable CA certificate was found"
  • that every CA certificate found is on the CLI's deny list

If every certificate in NODE_EXTRA_CA_CERTS is already in the trusted store, Claude Code no longer adds them again, and the log says each is listed once. Before, it always added them.

Why

In setups without built-in trusted certificates, you now get an error that says what is wrong instead of an unexplained connection failure.

Read from
Names in the bundleNODE_EXTRA_CA_CERTS

See this entry in the whole of v2.1.311 →

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