diff --git a/pkgs/development/python-modules/bitmath/default.nix b/pkgs/development/python-modules/bitmath/default.nix
index 52213081e0f5..87c00c52e548 100644
--- a/pkgs/development/python-modules/bitmath/default.nix
+++ b/pkgs/development/python-modules/bitmath/default.nix
@@ -1,33 +1,35 @@
 {
   lib,
   buildPythonPackage,
-  fetchPypi,
-  isPy3k,
-  progressbar231 ? null,
-  progressbar33,
-  mock,
+  fetchFromGitHub,
+  hatchling,
+  pytestCheckHook,
 }:
 
-buildPythonPackage rec {
+buildPythonPackage (finalAttrs: {
   pname = "bitmath";
-  version = "1.3.3.1";
-  format = "setuptools";
+  version = "2.1.1";
+  pyproject = true;
 
-  src = fetchPypi {
-    inherit pname version;
-    sha256 = "293325f01e65defe966853111df11d39215eb705a967cb115851da8c4cfa3eb8";
+  src = fetchFromGitHub {
+    owner = "timlnx";
+    repo = "bitmath";
+    tag = "v${finalAttrs.version}";
+    hash = "sha256-9hiwIpDIAU+N+LhlJ9qlKBZQibbrwwhGM77fvEnABRI=";
   };
 
-  nativeCheckInputs = [
-    (if isPy3k then progressbar33 else progressbar231)
-    mock
-  ];
+  build-system = [ hatchling ];
+
+  nativeCheckInputs = [ pytestCheckHook ];
+
+  pythonImportsCheck = [ "bitmath" ];
 
   meta = {
     description = "Module for representing and manipulating file sizes with different prefix";
-    mainProgram = "bitmath";
-    homepage = "https://github.com/tbielawa/bitmath";
+    homepage = "https://github.com/timlnx/bitmath";
+    changelog = "https://github.com/timlnx/bitmath/releases/tag/${finalAttrs.src.tag}";
     license = lib.licenses.mit;
     maintainers = with lib.maintainers; [ twey ];
+    mainProgram = "bitmath";
   };
-}
+})