[BUG] `claude --upgrade` downgrades Claude

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

I'm not sure if I'm using the latest version of Claude Code anymore honestly. Claude upgraded and showed me this.

Current version: 2.1.124
Checking for updates to latest version...
Successfully updated from 2.1.124 to version 2.1.123

MacOS 26.4.1

<img width="461" height="57" alt="Image" src="https://github.com/user-attachments/assets/1bb597bf-a753-4f07-be47-e641b8e4aa1e" />

Was 2.1.124 released and then pulled? I've only ever done updates with claude --upgrade.

What Should Happen?

It probably should've left me on 2.1.124 unless 2.1.124 was recalled. In that case it should've been reverted to 2.1.123 but called 2.1.125 or a message should inform the user about why the upgrade was a downgrade

Error Messages/Logs

Steps to Reproduce

• Run claude --upgrade yesterday (2026-04-29)
• Run claude --upgrade today (2026-04-30)

Getting an environment that reproduces yesterday may not be feasible without new physics.

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.1.124

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_