diff --git a/vhost-device-sound/README.md b/vhost-device-sound/README.md
index 3f6d884..7aac6c5 100644
--- a/vhost-device-sound/README.md
+++ b/vhost-device-sound/README.md
@@ -22,6 +22,10 @@ generated with help2man target/debug/vhost-device-sound |mandoc
      --backend <BACKEND>
             audio backend to be used [possible values: null, pipewire, alsa, gstreamer]
 
+     --streams <STREAMS>
+            comma-separated list of stream directions to enable [possible values: output, input]
+            (default: output,input)
+
      -h, --help
             Print help