diff --git a/pkgs/development/python-modules/numdifftools/default.nix b/pkgs/development/python-modules/numdifftools/default.nix
index 316a17e58caf..4bdc3bde6feb 100644
--- a/pkgs/development/python-modules/numdifftools/default.nix
+++ b/pkgs/development/python-modules/numdifftools/default.nix
@@ -3,25 +3,25 @@
   buildPythonPackage,
   fetchFromGitHub,
   numpy,
-  pythonOlder,
   scipy,
+  pdm-backend,
 }:
 
 buildPythonPackage rec {
   pname = "numdifftools";
-  version = "0.9.41";
-  format = "setuptools";
-
-  disabled = pythonOlder "3.7";
+  version = "0.9.42";
+  pyproject = true;
 
   src = fetchFromGitHub {
     owner = "pbrod";
     repo = "numdifftools";
-    rev = "v${version}";
-    hash = "sha256-HYacLaowSDdrwkxL1h3h+lw/8ahzaecpXEnwrCqMCWk=";
+    tag = "v${version}";
+    hash = "sha256-tNPv+KJuSmMHItHfRUjMIFtAFB+vC530sp+Am0VRG44=";
   };
 
-  propagatedBuildInputs = [
+  build-system = [ pdm-backend ];
+
+  dependencies = [
     numpy
     scipy
   ];
@@ -29,20 +29,12 @@ buildPythonPackage rec {
   # Tests requires algopy and other modules which are optional and/or not available
   doCheck = false;
 
-  postPatch = ''
-    substituteInPlace setup.py \
-      --replace '"pytest-runner"' ""
-    # Remove optional dependencies
-    substituteInPlace requirements.txt \
-      --replace "algopy>=0.4" "" \
-      --replace "statsmodels>=0.6" ""
-  '';
-
   pythonImportsCheck = [ "numdifftools" ];
 
   meta = {
     description = "Library to solve automatic numerical differentiation problems in one or more variables";
     homepage = "https://github.com/pbrod/numdifftools";
+    changelog = "https://github.com/pbrod/numdifftools/blob/${src.tag}/CHANGELOG.md";
     license = lib.licenses.bsd3;
     maintainers = with lib.maintainers; [ fab ];
   };