diff --git a/README.md b/README.md
index 8f27e6a83..94a38ec1a 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,7 @@ Clock Signal ('CLK') is an emulator for tourists that seeks to be invisible. Use
 
 macOS and source releases are [hosted on GitHub](https://github.com/TomHarte/CLK/releases). For desktop Linux it is also available as a [Snap](https://snapcraft.io/clock-signal).
 
-On the Mac it is a native Cocoa application; under Linux, BSD and other UNIXes and UNIX-alikes it can be built either with Qt or with SDL; the Qt build should be considered preliminary and is currently closely bound to X11 as Qt doesn't abstract game-like keyboard handling.
+On the Mac it is a native Cocoa and Metal application; under Linux, BSD and other UNIXes and UNIX-alikes it uses OpenGL and can be built either with Qt or with SDL.
 
 So its aims are:
 * single-click load of any piece of source media for any supported platform;