Brew Warning: powershell@preview has been deprecated because it does not pass the macOS Gatekeeper check! It will be disabled on 2026-09-01.

[Manbearpiet]

Prerequisites

• Write a descriptive title.
• Make sure you are able to repro it on the latest released version
• Search the existing issues.
• Refer to the FAQ.
• Refer to Differences between Windows PowerShell 5.1 and PowerShell.

Steps to reproduce

brew update && brew upgrade && brew cleanup

Expected behavior

#installs and updates both normal and preview without warnings
brew install powershell
brew install powershell@preview
brew update && brew upgrade powershell
brew update && brew upgrade powershell@preview

Actual behavior

Warning: powershell has been deprecated because it does not pass the macOS Gatekeeper check! It will be disabled on 2026-09-01.
Warning: powershell@preview has been deprecated because it does not pass the macOS Gatekeeper check! It will be disabled on 2026-09-01.

Error details

# installing regular pwsh

brew install powershell
Warning: powershell has been deprecated because it does not pass the macOS Gatekeeper check! It will be disabled on 2026-09-01.
==> Caveats
To use Homebrew in PowerShell, run the following in a PowerShell session:
  New-Item -Path (Split-Path -Parent -Path $PROFILE.CurrentUserAllHosts) -ItemType Directory -Force
  Add-Content -Path $PROFILE.CurrentUserAllHosts -Value '$(/opt/homebrew/bin/brew shellenv) | Invoke-Expression'

# installing pwsh preview

brew install powershell@preview
Warning: powershell@preview has been deprecated because it does not pass the macOS Gatekeeper check! It will be disabled on 2026-09-01.
==> Downloading https://github.com/PowerShell/PowerShell/releases/download/v7.5.4/powershell-7.5.4-osx-arm64.pkg
Already downloaded: /Users/christianpiet/Library/Caches/Homebrew/downloads/e03ebabcb3a770cccbb3e18e943cfff5761e596422d77fb738ece1949132934c--powershell-7.5.4-osx-arm64.pkg
==> Installing Cask powershell
==> Running installer for powershell with `sudo` (which may request your password)...
installer: Package name is PowerShell - 7.5.4
installer: Installing at base path /
installer: The install was successful.
🍺  powershell was successfully installed!

# updating preview

brew update && brew upgrade
Warning: powershell@preview has been deprecated because it does not pass the macOS Gatekeeper check! It will be disabled on 2026-09-01.
==> Fetching downloads for: powershell@preview
✔︎ Cask powershell@preview (7.6.0-pre [Verified     72.3MB/ 72.3MB]
==> Upgrading 1 outdated package:
powershell@preview 7.6.0-preview.5 -> 7.6.0-preview.6
==> Upgrading powershell@preview
==> Caveats
To use Homebrew in PowerShell, set:
  Add-Content -Path $PROFILE.CurrentUserAllHosts -Value '$(/opt/homebrew/bin/brew shellenv) | Invoke-Expression'

==> Uninstalling packages with `sudo` (which may request your pass
com.microsoft.powershell-preview
==> Running installer for powershell@preview with `sudo` (which ma
installer: Package name is powershell
installer: Upgrading at base path /
installer: The upgrade was successful.
==> Purging files for version 7.6.0-preview.5 of Cask powershell@p
🍺  powershell@preview was successfully upgraded!

Environment data

$PSVersionTable

Name                           Value
----                           -----
PSVersion                      7.6.0-preview.6
PSEdition                      Core
GitCommitId                    7.6.0-preview.6
OS                             macOS 26.2.0
Platform                       Unix
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0…}
PSRemotingProtocolVersion      2.4
SerializationVersion           1.1.0.1
WSManStackVersion              3.0

Visuals

https://formulae.brew.sh/cask/powershell@preview#default

powershell@preview (deprecated)

Disable date: 2026-09-01
Install command:

brew install --cask powershell@preview

Name: PowerShell

Command-line shell and scripting language

https://github.com/PowerShell/PowerShell

Cask JSON API: [/api/cask/powershell@preview.json](https://formulae.brew.sh/api/cask/powershell@preview.json)

Cask code: [powershell@preview.rb](https://github.com/Homebrew/homebrew-cask/blob/53544b53e116c49fa78bb18cfc58280c9f59e096/Casks/p/powershell@preview.rb) on GitHub

Current version: [7.6.0-preview.6](https://github.com/PowerShell/PowerShell/releases/download/v7.6.0-preview.6/powershell-7.6.0-preview.6-osx-arm64.pkg)

Requirements: macOS >= 10.15

https://formulae.brew.sh/cask/powershell#default

powershell (deprecated)

Disable date: 2026-09-01
Install command:

brew install --cask powershell

Name: PowerShell

Command-line shell and scripting language

https://github.com/PowerShell/PowerShell

Cask JSON API: [/api/cask/powershell.json](https://formulae.brew.sh/api/cask/powershell.json)

Cask code: [powershell.rb](https://github.com/Homebrew/homebrew-cask/blob/53544b53e116c49fa78bb18cfc58280c9f59e096/Casks/p/powershell.rb) on GitHub

Current version: [7.5.4](https://github.com/PowerShell/PowerShell/releases/download/v7.5.4/powershell-7.5.4-osx-arm64.pkg)

Requirements: macOS >= 10.15

[mklement0]

The problem is being tracked in:

• Release Process for v7.x.x - Brew Deprecated #26061