diff --git a/nixos/lib/make-squashfs.nix b/nixos/lib/make-squashfs.nix
index 170d315fb751..d1260a48f229 100644
--- a/nixos/lib/make-squashfs.nix
+++ b/nixos/lib/make-squashfs.nix
@@ -10,6 +10,7 @@
 
 stdenv.mkDerivation {
   name = "squashfs.img";
+  __structuredAttrs = true;
 
   nativeBuildInputs = [ squashfsTools ];