Updating old code

So, we have a code base that uses WinSCP pretty consistently, but version 5.1.7.0 (which is installed on the server). The version I have on my machine is 5.9.6.0. When I develop on my machine and deploy to the server it gives me this message:

WinSCP Exception: The version of C:\Program Files (x86)\WinSCP\winscp.exe (5.1.7.0) does not match version of this assembly C:\Program Files (x86)\WinSCP\WinSCPnet.DLL (5.9.6.0).

I am pretty new to all of this so guidance would be helpful, what changes can I make to the code base so that if we update WinSCP it doesn't break all of the automation? I assume that my dev machine must have the same version of WinSCP that the server has installed.

Thank you!

Deploy winscp.exe along with the application.
The easiest way it to use WinSCP NuGet package.
It's all documented:
https://winscp.net/eng/docs/library_install#installing