diff --git a/pkgs/servers/mpd/default.nix b/pkgs/servers/mpd/default.nix
index 3ec05f243fa9..e16dbd43fc14 100644
--- a/pkgs/servers/mpd/default.nix
+++ b/pkgs/servers/mpd/default.nix
@@ -38,6 +38,7 @@
   soxr,
   # Outputs
   alsa-lib,
+  libao,
   libjack2,
   libpulseaudio,
   libshout,
@@ -112,6 +113,7 @@ let
     soxr = [ soxr ];
     # Output plugins
     alsa = [ alsa-lib ];
+    ao = [ libao ];
     jack = [ libjack2 ];
     pipewire = [ pipewire ];
     pulse = [ libpulseaudio ];