diff --git a/pkgs/development/python-modules/pysolcast/default.nix b/pkgs/development/python-modules/pysolcast/default.nix
index 42298fcd6d53..8de00b91ace4 100644
--- a/pkgs/development/python-modules/pysolcast/default.nix
+++ b/pkgs/development/python-modules/pysolcast/default.nix
@@ -30,12 +30,15 @@ buildPythonPackage rec {
     "responses"
   ];
 
-  nativeBuildInputs = [
+  build-system = [
     poetry-core
+  ];
+
+  nativeBuildInputs = [
     pythonRelaxDepsHook
   ];
 
-  propagatedBuildInputs = [
+  dependencies = [
     anyconfig
     isodate
     pyyaml