diff --git a/pkgs/development/python-modules/timecop/default.nix b/pkgs/development/python-modules/timecop/default.nix
index fb455d079b0e..d3ab9014e072 100644
--- a/pkgs/development/python-modules/timecop/default.nix
+++ b/pkgs/development/python-modules/timecop/default.nix
@@ -1,20 +1,40 @@
-{ lib, buildPythonPackage, fetchPypi }:
+{ lib
+, buildPythonPackage
+, fetchPypi
+, pythonOlder
+, setuptools
+, unittestCheckHook
+}:
 
 buildPythonPackage rec {
   pname = "timecop";
   version = "0.5.0dev";
-  format = "setuptools";
+  pyproject = true;
+
+  disabled = pythonOlder "3.7";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "0zbi58sw2yp1qchzfhyi7bsrwxajiypphg65fir98kvj03g011wd";
+    hash = "sha256-jYcA3gByT5RydMU8eK+PUnWe9TrRQ/chw+F6wTUqcX0=";
   };
 
+  build-system = [
+    setuptools
+  ];
+
+  nativeCheckInputs = [
+    unittestCheckHook
+  ];
+
   # test_epoch fails, see https://github.com/bluekelp/pytimecop/issues/4
   preCheck = ''
     sed -i 's/test_epoch/_test_epoch/' timecop/tests/test_freeze.py
   '';
 
+  pythonImportsCheck = [
+    "timecop"
+  ];
+
   meta = with lib; {
     description = "A port of the most excellent TimeCop Ruby Gem for Python";
     homepage = "https://github.com/bluekelp/pytimecop";