diff --git a/pkgs/development/python-modules/cypherpunkpay/default.nix b/pkgs/development/python-modules/cypherpunkpay/default.nix
index ca3623f09199..1a19caa734c4 100644
--- a/pkgs/development/python-modules/cypherpunkpay/default.nix
+++ b/pkgs/development/python-modules/cypherpunkpay/default.nix
@@ -1,33 +1,37 @@
 {
   lib,
+  buildPythonPackage,
+  fetchFromGitHub,
+
+  # build-system
+  poetry-core,
+
+  # dependencies
   apscheduler,
   bitstring,
-  buildPythonPackage,
   cffi,
   ecdsa,
-  fetchFromGitHub,
   monero,
-  poetry-core,
   pypng,
   pyqrcode,
   pyramid,
   pyramid-jinja2,
   pysocks,
-  pytestCheckHook,
-  pythonOlder,
+  pytz,
   requests,
   tzlocal,
   waitress,
-  webtest,
   yoyo-migrations,
+
+  # tests
+  pytestCheckHook,
+  webtest,
 }:
 
 buildPythonPackage rec {
   pname = "cypherpunkpay";
   version = "1.0.16";
-  format = "pyproject";
-
-  disabled = pythonOlder "3.7";
+  pyproject = true;
 
   src = fetchFromGitHub {
     owner = "CypherpunkPay";
@@ -46,11 +50,11 @@ buildPythonPackage rec {
     "waitress"
   ];
 
-  nativeBuildInputs = [
+  build-system = [
     poetry-core
   ];
 
-  propagatedBuildInputs = [
+  dependencies = [
     apscheduler
     bitstring
     cffi
@@ -61,6 +65,7 @@ buildPythonPackage rec {
     pyramid
     pyramid-jinja2
     pysocks
+    pytz
     requests
     tzlocal
     waitress
@@ -103,14 +108,14 @@ buildPythonPackage rec {
 
   pythonImportsCheck = [ "cypherpunkpay" ];
 
-  meta = with lib; {
+  meta = {
     description = "Modern self-hosted software for accepting Bitcoin";
     homepage = "https://github.com/CypherpunkPay/CypherpunkPay";
     changelog = "https://github.com/CypherpunkPay/CypherpunkPay/releases/tag/v${version}";
-    license = with licenses; [
+    license = with lib.licenses; [
       mit # or
       unlicense
     ];
-    maintainers = with maintainers; [ prusnak ];
+    maintainers = with lib.maintainers; [ prusnak ];
   };
 }