diff --git a/Sense/scripts/build/build-windows.ps1 b/Sense/scripts/build/build-windows.ps1
index b084199..a08194f 100644
--- a/Sense/scripts/build/build-windows.ps1
+++ b/Sense/scripts/build/build-windows.ps1
@@ -18,6 +18,17 @@ function Assert-ChildPath([string]$Parent, [string]$Child) {
     }
 }
 
+function Get-SenseFileSha256([string]$Path) {
+    $sha256 = [Security.Cryptography.SHA256]::Create()
+    $stream = [IO.File]::OpenRead($Path)
+    try {
+        return ([BitConverter]::ToString($sha256.ComputeHash($stream))).Replace('-', '')
+    } finally {
+        $stream.Dispose()
+        $sha256.Dispose()
+    }
+}
+
 Assert-ChildPath $senseRoot $distRoot
 Assert-ChildPath $distRoot $target
 Assert-ChildPath $distRoot $archive
@@ -89,7 +100,7 @@ try {
     if ($LASTEXITCODE -ne 0) { throw 'Sense package audit failed.' }
     $manifest = foreach ($file in Get-ChildItem -LiteralPath $staging -Recurse -File | Sort-Object FullName) {
         $relative = $file.FullName.Substring($staging.Length + 1).Replace('\', '/')
-        "$(Get-FileHash -LiteralPath $file.FullName -Algorithm SHA256 | Select-Object -ExpandProperty Hash)  $relative"
+        "$(Get-SenseFileSha256 -Path $file.FullName)  $relative"
     }
     [IO.File]::WriteAllLines((Join-Path $staging 'MANIFEST.sha256'), $manifest, (New-Object Text.UTF8Encoding($false)))