diff --git a/modules/hm/pro_audio.nix b/modules/hm/pro_audio.nix
index 54e2044..1b16b56 100644
--- a/modules/hm/pro_audio.nix
+++ b/modules/hm/pro_audio.nix
@@ -35,6 +35,7 @@ in
       fluidsynth
       geonkick
       giada
+      hydrogen
       lsp-plugins
       # mixxx
       rnnoise