diff --git a/pkgs/tools/package-management/lix/doc/default.nix b/pkgs/tools/package-management/lix/doc/default.nix
index a3c1d7d9ccc5..c56228651cc7 100644
--- a/pkgs/tools/package-management/lix/doc/default.nix
+++ b/pkgs/tools/package-management/lix/doc/default.nix
@@ -2,11 +2,12 @@
   src,
   rustPlatform,
   version,
-  cargoHash,
+  cargoHash ? null,
+  cargoLock ? null
 }:
 
 rustPlatform.buildRustPackage {
   pname = "lix-doc";
   sourceRoot = "${src.name}/lix-doc";
-  inherit version src cargoHash;
+  inherit version src cargoHash cargoLock;
 }