Sweep 19 Sep 2026 · 02:36Z Build v2.1.278 500 read Stable v2.1.267 Latest v2.1.278 Next v2.1.278 Feeds RSS JSON llms.txt Unofficial
Claude Code v2.1.274 ·

New version-mismatch update prompt

New message tells users their Claude Code version must be updated before continuing, with the exact update command

TierYou'll noticehow much it should matter to you
Useful2my rating, 1 to 5
Signal1worth watching, 1 to 5
AreaElsewherewhat it touches
KindImprovementsin v2.1.274,
You'll notice

New message tells users their Claude Code version must be updated before continuing, with the exact update command

What

A new message tells the user that their current version of Claude Code is too old, states the minimum version now required, and tells them to run claude update.

Why

This makes clear why Claude Code has stopped working and gives the exact command to fix it, instead of leaving the user to guess what to do.

Read from
Names in the bundleclaude update
Since it was published

The entry above is what we published on the day. These lines were added later, as Anthropic's own pages caught up, and they sit beside the original rather than replacing it.

Confirmed since Anthropic's documentation has since written up claude update, on Claude Code changelog. * Fixed update checks erroring every 30 minutes, and `claude update` hanging when a minimum or maximum version is set, if a proxy returns an invalid version; a malformed `minimumVersion` is now ignored changelog see the edit
How sure we are
One source agreesOne thing we can check says the same as this entry.
Anthropic's documentation agreesAnthropic's documentation has since written up claude update, on Claude Code changelog.

See this entry in the whole of v2.1.274 →