diff --git a/install.cmd b/install.cmd
index e1d2258..df940ec 100644
--- a/install.cmd
+++ b/install.cmd
@@ -12,17 +12,14 @@ Write-Host Determining latest release...
 $tag = (Invoke-WebRequest $releases | ConvertFrom-Json)[0].tag_name
 
 $download = "https://github.com/$repo/releases/download/$tag/$file"
+$zip = "pses.zip"
 
 new-item -Name $dir -ItemType directory -Force
 Write-Host Dowloading $tag
-Invoke-WebRequest $download -Out $file
-$file = Get-Item $file
+Invoke-WebRequest $download -Out $zip
 
 Write-Host Extracting release files...
+Expand-Archive $zip -Force
 
-$shell = new-object -com shell.application
-$zip = $shell.NameSpace($file.FullName)
-foreach($item in $zip.items()) { $shell.Namespace($file.DirectoryName).copyhere($item) }
-
-Remove-Item $file -Force
+Remove-Item $zip -Force
 Write-Host install completed.