diff --git a/pkgs/development/python-modules/pylink-square/default.nix b/pkgs/development/python-modules/pylink-square/default.nix
index 2e8121e0932f..4e95fc447530 100644
--- a/pkgs/development/python-modules/pylink-square/default.nix
+++ b/pkgs/development/python-modules/pylink-square/default.nix
@@ -2,6 +2,7 @@
   lib,
   buildPythonPackage,
   fetchFromGitHub,
+  setuptools,
   mock,
   psutil,
   pytestCheckHook,
@@ -11,8 +12,8 @@
 
 buildPythonPackage rec {
   pname = "pylink-square";
-  version = "1.2.0";
-  format = "setuptools";
+  version = "1.2.1";
+  pyproject = true;
 
   disabled = pythonOlder "3.7";
 
@@ -20,10 +21,12 @@ buildPythonPackage rec {
     owner = "square";
     repo = "pylink";
     rev = "refs/tags/v${version}";
-    hash = "sha256-rcM7gvUUfXN5pL9uIihzmOCXA7NKjiMt2GaQaGJxD9M=";
+    hash = "sha256-WMpb/b9kF1rFlegDYxNGJbZ2Nz8nuG21tyjgUFLs5mg=";
   };
 
-  propagatedBuildInputs = [
+  build-system = [ setuptools ];
+
+  dependencies = [
     psutil
     six
   ];