diff --git a/README.md b/README.md
index 7cc7fd4d7..566fa1566 100644
--- a/README.md
+++ b/README.md
@@ -94,9 +94,12 @@ Installing "drake" is simple. As root run the following command:
 Other libraries are optional and only limit the features that are
 built. These include:
 
+- [Qt](http://www.qt.io/) -- a cross-platform GUI toolkit. You need
+  this if you want to use the MKVToolNix GUI or mkvinfo's GUI.
+
 - [wxWidgets](http://www.wxwidgets.org/) -- a cross-platform GUI
-  toolkit. You need this if you want to use `mmg` (the mkvmerge GUI) or
-  mkvinfo's GUI.
+  toolkit. You need this if you want to use the deprecated `mmg` (the
+  mkvmerge GUI) or mkvinfo's deprecated, wxWidgets-based GUI.
 
 - [libFLAC](http://downloads.xiph.org/releases/flac/) for FLAC
   support (Free Lossless Audio Codec)