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Sweep 22 Sep 2026 · 17:19Z Build v2.1.280 501 read Stable v2.1.267 Latest v2.1.280 Next v2.1.280 Feeds RSS JSON llms.txt Unofficial
Claude Code v2.1.257 ·

--background/--bg can now resume a session in place

Combining --bg with --resume now continues that session in the background under the same ID.

TierUse it nowhow much it should matter to you
Useful5my rating, 1 to 5
Signal3worth watching, 1 to 5
AreaSessionswhat it touches
KindImprovementsin v2.1.257,
Use it now Notable

Combining --bg with --resume now continues that session in the background under the same ID.

The --bg/--background CLI flag's help text now documents that combining it with --resume <session-id> continues that session in the background under the same ID, or starts a copy and reports it when the session is already running, rather than only starting a fresh background session.

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Names in the bundle--resume
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.

Added since A small documentation edit on Common workflows touched a line naming --resume after this was published. | [`/loop`](/docs/en/scheduled-tasks) | The current CLI session | Quick polling while a session is open. `--resume` and `--continue` restore unexpired fixed-interval loops. | common-workflows see the edit
Confirmed since Anthropic's documentation has since written up --resume, on Claude Code changelog. * Improved `--continue` / `--resume`: the conversation appears immediately instead of waiting for SessionStart hooks, and the first message no longer re-reads the whole transcript changelog see the edit
How sure we are
Two sources agreeTwo things we can check say the same as this entry.
Anthropic's documentation agreesAnthropic's documentation has since written up --resume, on Claude Code changelog.
Anthropic's release notes agreeFixed --resume listing a backgrounded conversation twice and --continue reopening its stalled pre-background copy; --continue now also opens…

See this entry in the whole of v2.1.257 →

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