diff --git a/pkgs/development/python-modules/lifelines/default.nix b/pkgs/development/python-modules/lifelines/default.nix
index c8e2a07bf5b1..d6fb49c7db6f 100644
--- a/pkgs/development/python-modules/lifelines/default.nix
+++ b/pkgs/development/python-modules/lifelines/default.nix
@@ -16,15 +16,14 @@
   pythonOlder,
   scikit-learn,
   scipy,
+  setuptools,
   sybil,
 }:
 
 buildPythonPackage rec {
   pname = "lifelines";
   version = "0.30.0";
-  format = "setuptools";
-
-  disabled = pythonOlder "3.9";
+  pyproject = true;
 
   src = fetchFromGitHub {
     owner = "CamDavidsonPilon";
@@ -33,7 +32,9 @@ buildPythonPackage rec {
     hash = "sha256-rbt0eON8Az5jDvj97RDn3ppWyjbrSa/xumbwhq21g6g=";
   };
 
-  propagatedBuildInputs = [
+  build-system = [ setuptools ];
+
+  dependencies = [
     autograd
     autograd-gamma
     formulaic
@@ -57,13 +58,17 @@ buildPythonPackage rec {
 
   disabledTestPaths = [ "lifelines/tests/test_estimation.py" ];
 
-  disabledTests = [ "test_datetimes_to_durations_with_different_frequencies" ];
+  disabledTests = [
+    "test_datetimes_to_durations_with_different_frequencies"
+    # AssertionError
+    "test_mice_scipy"
+  ];
 
-  meta = with lib; {
+  meta = {
     description = "Survival analysis in Python";
     homepage = "https://lifelines.readthedocs.io";
     changelog = "https://github.com/CamDavidsonPilon/lifelines/blob/v${version}/CHANGELOG.md";
-    license = licenses.mit;
-    maintainers = with maintainers; [ swflint ];
+    license = lib.licenses.mit;
+    maintainers = with lib.maintainers; [ swflint ];
   };
 }