How can i upgrade assembly version of files in powershell?

Question

I have assembly versions . I am up to 1.0.0.28 I want to update the last number. So can i grab the last number increment and put it as the value.

I have tried

$assemblyInfo = Get-Content -Path "c:\AssemblyInfo.cs"        
# Replace last digit of AssemblyFileVersion
$assemblyInfo = $assemblyInfo -replace 
    "^\[assembly: AssemblyFileVersion\(`"([0-9]+)\.([0-9]+)\.([0-9]+)\.[0-9]+`"\)]", 
    ('[assembly: AssemblyFileVersion("$1.$2.$3")]')
Write-Host  ($assemblyInfo -match '^\[assembly: AssemblyFileVersion')
    
$assemblyInfo | Set-Content -Path "c:\AssemblyInfo.cs" -Encoding UTF8

How can i increment the last number ?