diff --git a/modules/roles/server.nix b/modules/roles/server.nix
index 0a2fb68..3cdfefb 100644
--- a/modules/roles/server.nix
+++ b/modules/roles/server.nix
@@ -9,6 +9,7 @@ in
 	config = mkIf (role == "server") {
 		environment.systemPackages = with pkgs; [
 			htop
+			mdadm
 			tmux
 		];
 	};