diff --git a/nixos/roles/laminar/test-config.nix b/nixos/roles/laminar/test-config.nix
index ad0b93f3..f15b04ca 100644
--- a/nixos/roles/laminar/test-config.nix
+++ b/nixos/roles/laminar/test-config.nix
@@ -1,6 +1,6 @@
 { pkgs, lib, config, ... }:
 let
-  bins = lib.attrValues { inherit (pkgs) git nix niv gnutar gzip openssh laminar; };
+  bins = lib.attrValues { inherit (pkgs) git nix niv gnutar xz gzip openssh laminar; };
   standardPath = lib.makeBinPath bins;
   imports = [ "Control.Exception (onException)" ];
   haskellBody = name: drv: ''