.NET Assembly for 4.1.7

Is it possible to get an assembly for version 4.1.7? I looked through the site and SourceForge, but haven't been able to find one for this old of a version. Maybe I'm just blind though...

The WinSCP .NET assembly is available since 5.0.6 only.
https://winscp.net/tracker/147

You should not use 4.1.7 at all anyway.

Unfortunately, I don't have control over what version of WinSCP my team uses. Thanks anyway. :)