diff --git a/pkgs/development/python-modules/lacuscore/default.nix b/pkgs/development/python-modules/lacuscore/default.nix
index 626a95ba9333..6531d04b3131 100644
--- a/pkgs/development/python-modules/lacuscore/default.nix
+++ b/pkgs/development/python-modules/lacuscore/default.nix
@@ -33,12 +33,15 @@ buildPythonPackage rec {
     "requests"
   ];
 
-  nativeBuildInputs = [
+  build-system = [
     poetry-core
+  ];
+
+  nativeBuildInputs = [
     pythonRelaxDepsHook
   ];
 
-  propagatedBuildInputs = [
+  dependencies = [
     async-timeout
     defang
     dnspython