[BUG] 86 fails to install/update to 87 on Windows

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?

Windows Powershell:

❯ claude update
Current version: 2.1.86
Checking for updates to latest version...
Successfully updated from 2.1.86 to version 2.1.87

~ via 🐍 v3.10.4 took 3s
❯ claude --version
2.1.86 (Claude Code)

~ via 🐍 v3.10.4
❯ irm https://claude.ai/install.ps1 | iex
Setting up Claude Code...

✔ Claude Code successfully installed!

  Version: 2.1.87

  Location: C:\Users\erikm\.local\bin\claude.exe


  Next: Run claude --help to get started

✅ Installation complete!


~ via 🐍 v3.10.4 took 13s
❯ claude --version
2.1.86 (Claude Code)

~ via 🐍 v3.10.4
❯

WSL:

❯ claude --version
2.1.86 (Claude Code)

~ 🐧
❯ claude update
Current version: 2.1.86
Checking for updates to latest version...
Successfully updated from 2.1.86 to version 2.1.87

~ 🐧 took 3s
❯ claude --version
2.1.87 (Claude Code)

What Should Happen?

It should update.

Error Messages/Logs

Steps to Reproduce

See above.

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.1.86

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Windows Terminal

Additional Information

_No response_