diff --git a/tests/build-test.nix b/tests/build-test.nix
index 936259f..e946b0b 100644
--- a/tests/build-test.nix
+++ b/tests/build-test.nix
@@ -7,4 +7,9 @@
     device = "/dev/disk/by-uuid/00000000-0000-0000-0000-000000000000";
     fsType = "btrfs";
   };
+
+  nixpkgs.config = {
+    allowBroken = true;
+    allowUnfree = true;
+  };
 }