3-D Printing - Repetier Host - Slicr

While in the process of creating the G-Code for UCCNC within Repetier-Host program, the Slic3r program indicates an update is available,
I downloaded the update, but it does not appear to install so that it is accessible from the Repetier-Host program.

Is there a way to update the Slic3r program from within the Repetier-Host program, or can someone advise the directory address to install it too?

Thank you in advance.

Rick Whiteman