diff --git a/pkgs/by-name/pa/pacu/package.nix b/pkgs/by-name/pa/pacu/package.nix
index b5513e94b0ef..71528524e447 100644
--- a/pkgs/by-name/pa/pacu/package.nix
+++ b/pkgs/by-name/pa/pacu/package.nix
@@ -31,12 +31,15 @@ in python.pkgs.buildPythonApplication rec {
     "urllib3"
   ];
 
-  nativeBuildInputs = with python.pkgs; [
+  build-system = with python.pkgs; [
     poetry-core
+  ];
+
+  nativeBuildInputs = with python.pkgs; [
     pythonRelaxDepsHook
   ];
 
-  propagatedBuildInputs = [
+  dependencies = [
     awscli
   ] ++ (with python.pkgs; [
     awscli