Follow Discord

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 v2.1.205 Home All releases ←olderv2.1.204 v2.1.206newer→

Claude Code v2.1.205 8 Jul 2026

Binary update download uses streaming with a total deadline

The self-update download was rewritten to stream the binary to disk rather than buffering it entirely in memory:

A stall timeout resets on each chunk received; a separate total deadline aborts the download if it takes too long overall
Partial files are cleaned up on failure
ERR_STREAM_PREMATURE_CLOSE is now detected and triggers a retry
atomicMoveToInstallPath retries on EBUSY (Windows file-locking) with increasing delays

Evidence

Streaming download (search for "ERR_STREAM_PREMATURE_CLOSE") and deadline message (search for "Download timed out: exceeded the total deadline") — A5g() at line ~481355

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

See this entry in the whole of v2.1.205 →