diff --git a/README.rst b/README.rst
index f2907f43a..a8e651890 100644
--- a/README.rst
+++ b/README.rst
@@ -85,6 +85,9 @@ Example
 
    static void Main(string[] args)
    {
+       // The Python library can also be set with the `PYTHONNET_PYDLL` env var
+       // or dynamically with a library like https://github.com/losttech/WhichPython
+       Runtime.PythonDLL = "python38.dll";
        PythonEngine.Initialize();
        using (Py.GIL())
        {
diff --git a/doc/source/dotnet.rst b/doc/source/dotnet.rst
index ed2b741a7..f657c1261 100644
--- a/doc/source/dotnet.rst
+++ b/doc/source/dotnet.rst
@@ -16,6 +16,8 @@ At a very high level, to embed Python in your application one will need
 to:
 
 -  Reference ``Python.Runtime.dll`` (e.g. via a ``PackageReference``)
+-  Set the Python library the code should run with via the ``Runtime.PythonDLL``
+   property or the ``PYTHONNET_PYDLL`` environment variable
 -  Call ``PythonEngine.Initialize()`` to initialize Python
 -  Call ``var mod = PyModule.Import(name)`` to import a module as ``mod``