Having trouble updating docker-compose on Windows 10

I have a 64-bit windows 10 pc. My version of docker-Desktop says it is: 4.15.0. I downloaded the latest version of docker-desktop. When I attempted to update the installed version, it said I already had the latest version. My problem is, the version of docker-compose I have. if I run docker-compose --version, it says 2.15.0. I find online, however, references to docker-compose v3.8! I went so far as to uninstall docker-desktop and re-install from the latest file download. I apologize for being dense! Everything I try just leads to another dead end! Please help!!(