diff --git a/packages/powershell/oh-my-posh/deploy.ps1 b/packages/powershell/oh-my-posh/deploy.ps1
index cf1754bf4594..f4d5b6885537 100644
--- a/packages/powershell/oh-my-posh/deploy.ps1
+++ b/packages/powershell/oh-my-posh/deploy.ps1
@@ -20,7 +20,7 @@ Param
 Copy-Item -Path "../../../themes" -Destination "./themes" -Recurse
 # fetch all the binaries from the version's GitHub release
 New-Item -Path "./" -Name "bin" -ItemType "directory"
-"posh-windows-amd64.exe", "posh-windows-386.exe", "posh-darwin-amd64", "posh-linux-amd64", "posh-linux-arm" | ForEach-Object -Process {
+"posh-windows-amd64.exe", "posh-windows-386.exe", "posh-windows-arm64.exe", "posh-darwin-amd64", "posh-linux-amd64", "posh-linux-arm" | ForEach-Object -Process {
     $download = "https://github.com/jandedobbeleer/oh-my-posh/releases/download/v$BinVersion/$_"
     Invoke-WebRequest $download -Out "./bin/$_"
 }
diff --git a/packages/powershell/oh-my-posh/oh-my-posh.psm1 b/packages/powershell/oh-my-posh/oh-my-posh.psm1
index 3ec16868cf09..6f96d60ee479 100644
--- a/packages/powershell/oh-my-posh/oh-my-posh.psm1
+++ b/packages/powershell/oh-my-posh/oh-my-posh.psm1
@@ -19,10 +19,13 @@ function Get-PoshCommand {
         }
         return "$PSScriptRoot/bin/posh-linux-amd64"
     }
-    if ([Environment]::Is64BitOperatingSystem) {
-        return "$PSScriptRoot/bin/posh-windows-amd64.exe"
+    $arch = (Get-CimInstance -Class Win32_Processor -Property Architecture).Architecture
+    switch ($arch) {
+        0 { return "$PSScriptRoot/bin/posh-windows-386.exe" } # x86
+        5 { return "$PSScriptRoot/bin/posh-windows-arm64.exe" } # ARM
+        9 { return "$PSScriptRoot/bin/posh-windows-amd64.exe" } # x64
     }
-    return "$PSScriptRoot/bin/posh-windows-386.exe"
+    throw "Oh My Posh: Unsupported architecture: $arch"
 }
 
 function Set-ExecutablePermissions {