diff --git a/pkgs/development/python-modules/squarify/default.nix b/pkgs/development/python-modules/squarify/default.nix
index 971c5d6b4a21..4648e23435d1 100644
--- a/pkgs/development/python-modules/squarify/default.nix
+++ b/pkgs/development/python-modules/squarify/default.nix
@@ -2,25 +2,30 @@
   buildPythonPackage,
   fetchFromGitHub,
   lib,
+  setuptools,
   pytestCheckHook,
   matplotlib,
 }:
 
-buildPythonPackage rec {
+buildPythonPackage (finalAttrs: {
   pname = "squarify";
   version = "0.4.3";
-  format = "setuptools";
+  pyproject = true;
+
+  __structuredAttrs = true;
 
   src = fetchFromGitHub {
     owner = "laserson";
     repo = "squarify";
-    tag = "v${version}";
+    tag = "v${finalAttrs.version}";
     hash = "sha256-zSv+6xT9H4WyShRnwjjcNMjY19AFlQ6bw9Mh9p2rL08=";
   };
 
+  build-system = [ setuptools ];
+
   nativeCheckInputs = [ pytestCheckHook ];
 
-  propagatedBuildInputs = [ matplotlib ];
+  dependencies = [ matplotlib ];
 
   pythonImportsCheck = [ "squarify" ];
 
@@ -30,4 +35,4 @@ buildPythonPackage rec {
     license = lib.licenses.asl20;
     maintainers = with lib.maintainers; [ veehaitch ];
   };
-}
+})