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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 v2.1.226

1 entries read diff v2.1.225 → v2.1.226 Markdown
How it breaks down
Under the hood1

Claude Code v2.1.226 is a maintenance release. The only change in this build is the version bump itself, from 2.1.225 to 2.1.226. There are no new features, bug fixes, or behavior changes for users, and no action is required when upgrading. If you are already on 2.1.225, you can update at your convenience.

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Below the fold

Everything else

Smaller changes and internals, grouped as the pipeline found them. Nothing is dropped, it is only further down.

1 entry

Internal Changesopen

Under the hood
Useful1 Signal0
Elsewhere not in their notes

Version bump to 2.1.226#

The version number ticks up to 2.1.226; nothing else changes.

--version
What

The build-constant stamp is rewritten: VERSION moves from 2.1.225 to 2.1.226, BUILD_TIME from 2026-08-07T19:37:58Z to 2026-08-08T00:42:40Z, and GIT_SHA to e140b3281c1e8d834468889bd0a5c3fd2f15507c. Nothing changes beyond the reported version.

Details
  • The constant is inlined at every use site, so all 52 changes in this group are the same object re-stamped.
  • Visible in the startup banner, --version output, the Current version: line in the update flow, and the update/downgrade console messages.
  • Sent in the claude-code/ and claude-cli/ User-Agent strings and in the x-environment-runner-version header, where it is prefixed shr-.
  • Also drives the daemon-vs-CLI mismatch warning, the /doctor and feedback reports, the SDK get_binary_version control response, the npm update check's npm view <package>@<tag> version call, the Datadog sourcemap group identifiers, and the version field on numerous telemetry events.
  • Not gated; everyone on this build sees it.
Evidence

x-environment-runner-version, VERSION: "2.1.226"

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

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 v2.1.226. 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.

  • Bug fixes and reliability improvements
Read it on GitHub →
System prompt

No change to the system prompt since v2.1.225.

Claude Code, interactive mode

Read the prompts for this release →
Switches

Every name in this release

The 1 literal strings found in the bundle, with the number of entries that name each one. Picking one searches for it. A name is here because this build's code mentions it, which is not the same as it working or being finished.

CLI flags