diff --git a/machine/unfolder/default.nix b/machine/unfolder/default.nix
index 00a35d9..919ca1f 100644
--- a/machine/unfolder/default.nix
+++ b/machine/unfolder/default.nix
@@ -94,6 +94,7 @@
     obsidian
     mpv
     qutebrowser
+    ruby
   ];
   programs.direnv.enable = true;