diff --git a/shell/bud/default.nix b/shell/bud/default.nix
index 5226714..a4f5fa5 100644
--- a/shell/bud/default.nix
+++ b/shell/bud/default.nix
@@ -22,5 +22,7 @@
       help = "Installs Doom Emacs from https://github.com/hlissner/doom-emacs";
       script = ./install-doom.bash;
     };
+
+    update.writer = lib.mkForce (budUtils.writeBashWithPaths [ nixUnstable git mercurial openssh ]);
   };
 }