Unable to Update PnP Powershell from 1.9 to 2.1

[soumyadeep22]

Hi,

I am trying to upgrade PnP Powershell version with below command
Update-Module PnP.PowerShell -RequiredVersion 2.1.0

but its failing with below error

The module 'PnP.PowerShell' cannot be installed or updated because the
authenticode signature of the file 'PnP.PowerShell.psd1' is not valid.
At C:\Program Files\WindowsPowerShell\Modules\PowerShellGet\2.2.5\PSModule.psm1:13069 char:20

• ... $sid = PackageManagement\Install-Package @PSBoundParameters

•                  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  

  • CategoryInfo : InvalidOperation: (Microsoft.Power....InstallPackage:InstallPackage) [Install-Package],
    Exception
  • FullyQualifiedErrorId : InvalidAuthenticodeSignature,ValidateAndGet-AuthenticodeSignature,Microsoft.PowerShell.P
    ackageManagement.Cmdlets.InstallPackage

PowerShellGet version is 2.2.5.

Anyone faced similar issue while updating? What could be the fix. Any help will be appreciated

Thanks,
Soumyadeep