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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.

← All of v2.1.220 Home All releases ←olderv2.1.219 v2.1.221newer→
Claude Code v2.1.220

Build stamp moved to 2.1.220

Under the hood
Useful1 Signal0
Build Metadata

Version strings in update messages, doctor output and daemon logs were re-stamped to 2.1.220.

claude update
What

The inlined build constants appearing in around 40 user-visible and log strings were re-stamped, with no surrounding logic touched.

Details
  • VERSION 2.1.219 -> 2.1.220, BUILD_TIME 2026-07-24T03:24:19Z -> 2026-07-24T22:17:45Z, GIT_SHA 7006c4c3acac98e554d3997baeda6a7fa4d1ff7c -> 4073f59596e272f39393db4f96abc5f4b10eff21.
  • Affected strings include version output, claude update messages, user agents, doctor output and daemon logs.
Evidence

GIT_SHA: "4073f59596e272f39393db4f96abc5f4b10eff21"

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.

See this entry in the whole of v2.1.220 →