diff --git a/pkgs/development/python-modules/aioopenexchangerates/default.nix b/pkgs/development/python-modules/aioopenexchangerates/default.nix
index 668274ff85df..34948ce7b78d 100644
--- a/pkgs/development/python-modules/aioopenexchangerates/default.nix
+++ b/pkgs/development/python-modules/aioopenexchangerates/default.nix
@@ -1,19 +1,20 @@
-{ lib
-, aiohttp
-, aioresponses
-, pydantic
-, buildPythonPackage
-, fetchFromGitHub
-, poetry-core
-, pytest-aiohttp
-, pytestCheckHook
-, pythonOlder
-, pythonRelaxDepsHook
+{
+  lib,
+  aiohttp,
+  aioresponses,
+  pydantic,
+  buildPythonPackage,
+  fetchFromGitHub,
+  poetry-core,
+  pytest-aiohttp,
+  pytestCheckHook,
+  pythonOlder,
+  pythonRelaxDepsHook,
 }:
 
 buildPythonPackage rec {
   pname = "aioopenexchangerates";
-  version = "0.4.8";
+  version = "0.4.9";
   pyproject = true;
 
   disabled = pythonOlder "3.9";
@@ -22,24 +23,21 @@ buildPythonPackage rec {
     owner = "MartinHjelmare";
     repo = "aioopenexchangerates";
     rev = "refs/tags/v${version}";
-    hash = "sha256-qwqhbHp4JPsbA6g7SI2frtqhayCmA1s3pTW2S4r6gmw=";
+    hash = "sha256-goOzp5nPkQCtGV7U71ek1LQ93Ko5BdEvawYb/feGRQQ=";
   };
 
   postPatch = ''
     substituteInPlace pyproject.toml \
-      --replace " --cov=aioopenexchangerates --cov-report=term-missing:skip-covered" ""
+      --replace-fail " --cov=aioopenexchangerates --cov-report=term-missing:skip-covered" ""
   '';
 
-  nativeBuildInputs = [
-    poetry-core
-    pythonRelaxDepsHook
-  ];
+  pythonRelaxDeps = [ "pydantic" ];
 
-  pythonRelaxDeps = [
-    "pydantic"
-  ];
+  build-system = [ poetry-core ];
 
-  propagatedBuildInputs = [
+  nativeBuildInputs = [ pythonRelaxDepsHook ];
+
+  dependencies = [
     aiohttp
     pydantic
   ];
@@ -50,9 +48,7 @@ buildPythonPackage rec {
     pytestCheckHook
   ];
 
-  pythonImportsCheck = [
-    "aioopenexchangerates"
-  ];
+  pythonImportsCheck = [ "aioopenexchangerates" ];
 
   meta = with lib; {
     description = "Library for the Openexchangerates API";