diff --git a/gui/hm.nix b/gui/hm.nix
index cdaeeeb..ad228a2 100644
--- a/gui/hm.nix
+++ b/gui/hm.nix
@@ -46,6 +46,8 @@
     xdg-utils
     fzf
     waypipe
+    plantuml
+    d2
   ];
 
   terminal = {