diff --git a/README.md b/README.md
index f260259e..257724dd 100644
--- a/README.md
+++ b/README.md
@@ -17,9 +17,12 @@ You're encouraged to play with it, but I strongly advise against using it for an
 2. Clone this repository.
 2. `./build`
 
+Note that you can cross compile by specifying the `$GOOS` and `$GOARCH` environment variables.
 The build script sets its own `$GOPATH`, so the build environment is self-contained.
 This code should work on Linux and macOS, but see the optional example below for a way to share connectivity with the rest of a network.
 
+It should also work on Windows 7 or later, but you will first need to install the OpenVPN NDIS 6 TAP driver.
+
 ## Running
 
 To run the program, you'll need permission to create a `tun` device and configure it using `ip`.