diff --git a/README b/README
index 7972415a87..3c05829d35 100644
--- a/README
+++ b/README
@@ -114,6 +114,7 @@ REQUIREMENTS:
         dependencies:
 
         util-linux >= v2.19 (requires fsck -l, agetty -s)
+        dbus >= 1.4.0 (strictly speaking optional, but recommended)
         sulogin (from util-linux >= 2.22 or sysvinit-tools, optional but recommended)
         dracut (optional)
         PolicyKit (optional)