VS 2017 Using .NET 5 Rich Text Box with .NET 4 Windows Forms application

I have an application which use Rich Text Box on .NET Framework 4.0 (the code compiles fine with VS2010 as well as VS2019).

I have used the .NET 5 Rich Text Box and noticed some improvements.

Is it possible to use .NET 5 Rich Text Box with .NET Framework 4.0 Windows Forms application?

If yes, how?

Thanx.