diff --git a/audio/qtractor/README b/audio/qtractor/README
index e6e29d2c93..fbc9abc35b 100644
--- a/audio/qtractor/README
+++ b/audio/qtractor/README
@@ -6,3 +6,5 @@ as a fairly-featured Linux desktop audio workstation GUI, specially
 dedicated to the personal home-studio.
 
 This requires jack-audio-connection-kit.
+
+Optional dependencies include liblo, librubberband, dssi, and lv2.