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DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

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Claude Code v1.0.40

9 entries read diff v1.0.39 → v1.0.40 Markdown
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Changesopen

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# Claude Code v1.0.40 Changelog

Related

Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.

Enhanced Web Search Date Awareness#

The WebSearch tool now includes improved guidance for handling date-sensitive queries. When searching for the latest documentation or time-sensitive content, the tool will now properly account for the current date provided in the environment context.

Example: If the environment indicates "Today's date: 2025-07-01" and you request "the latest docs", the search will use 2025 in the query instead of defaulting to 2024.

Improved SSL/TLS Certificate Handling#

The CLI now better supports Node.js's automatic certificate authority (CA) handling:

  • When NODE_EXTRA_CA_CERTS is set, Claude Code will display an informative message that Node.js will automatically append these certificates to the built-in CAs
  • The certificate configuration display has been simplified and clarified
Usage
# Set additional CA certificates
export NODE_EXTRA_CA_CERTS=/path/to/ca-bundle.crt
claude-code

The API configuration info (shown via claude-code --version or during startup) will now display:

  • Additional CA cert(s): /path/to/ca-bundle.crt when NODE_EXTRA_CA_CERTS is set
  • Clearer labeling for mTLS client certificates and keys

Related

Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.

1 entry

Technical Improvementsopen

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  • Streamlined import statements for Node.js stream modules
  • Added support for data structures related to GitHub issue/PR tracking (internal improvement for future features)
  • Improved process working directory handling with explicit imports
  • Code restructuring for better modularity

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Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.

1 entry

Bug Fixesopen

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  • Removed redundant certificate configuration checks
  • Fixed duplicate import statements for stream modules
  • Cleaned up unnecessary conditional logic in certificate validation

Related

Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.

Verbatim
Official · Anthropic

Anthropic’s official release notes

Published verbatim by Anthropic for v1.0.40. Text is unmodified from the upstream changelog. Everything else on this page came out of the bundle instead, which is why the two lists don't match.

  • Fixed a bug causing API connection errors with UNABLE_TO_GET_ISSUER_CERT_LOCALLY if NODE_EXTRA_CA_CERTS was set
System prompt

The system prompt was not captured for this release, so this page cannot say whether it moved.