diff --git a/nixos/tests/pantheon.nix b/nixos/tests/pantheon.nix
index 07588ddc3176..20aee2eb7a4c 100644
--- a/nixos/tests/pantheon.nix
+++ b/nixos/tests/pantheon.nix
@@ -1,4 +1,4 @@
-import ./make-test-python.nix ({ pkgs, ...} :
+import ./make-test-python.nix ({ pkgs, lib, ...} :
 
 {
   name = "pantheon";