diff --git a/pkgs/development/python-modules/pytest-flask/default.nix b/pkgs/development/python-modules/pytest-flask/default.nix
index 02cc3bc68959..f6d7c5653d56 100644
--- a/pkgs/development/python-modules/pytest-flask/default.nix
+++ b/pkgs/development/python-modules/pytest-flask/default.nix
@@ -1,47 +1,71 @@
 {
   lib,
-  stdenv,
   buildPythonPackage,
-  fetchPypi,
-  flask,
-  pytest,
-  pytestCheckHook,
+  fetchFromGitHub,
+
+  # build-system
   setuptools-scm,
+
+  # buildInputs
+  pytest,
+
+  # dependencies
+  flask,
   werkzeug,
+
+  # tests
+  pytestCheckHook,
+  pythonAtLeast,
 }:
 
-buildPythonPackage rec {
+buildPythonPackage (finalAttrs: {
   pname = "pytest-flask";
   version = "1.3.0";
-  format = "setuptools";
+  pyproject = true;
 
-  src = fetchPypi {
-    inherit pname version;
-    hash = "sha256-WL4cl7Ibo8TUfgp2ketBAHdIUGw2v1EAT3jfEGkfqV4=";
+  src = fetchFromGitHub {
+    owner = "pytest-dev";
+    repo = "pytest-flask";
+    tag = finalAttrs.version;
+    hash = "sha256-mcBHpP6A+ehqowDccfcn+wv6WXRrF0cY9ez7kqkb3Hc=";
   };
 
-  nativeBuildInputs = [ setuptools-scm ];
+  build-system = [ setuptools-scm ];
 
   buildInputs = [ pytest ];
 
-  propagatedBuildInputs = [
+  dependencies = [
     flask
     werkzeug
   ];
 
-  nativeCheckInputs = [ pytestCheckHook ];
-
   pythonImportsCheck = [ "pytest_flask" ];
 
-  disabledTestPaths = lib.optionals stdenv.hostPlatform.isDarwin [
-    "tests/test_live_server.py"
+  nativeCheckInputs = [ pytestCheckHook ];
+
+  disabledTests = lib.optionals (pythonAtLeast "3.14") [
+    # Failed: nomatch: '*PASSED*'
+    "test_add_endpoint_to_live_server"
+    "test_clean_stop_live_server"
+    "test_live_server_fixed_host"
+    "test_live_server_fixed_port"
+    "test_rewrite_application_server_name"
+    "test_start_live_server"
+
+    # _pickle.PicklingError: Can't pickle local object
+    "test_init"
+    "test_server_is_alive"
+    "test_server_listening"
+    "test_set_application_server_name"
+    "test_stop_cleanly_join_exception"
+    "test_url_for"
   ];
 
   meta = {
     description = "Set of pytest fixtures to test Flask applications";
     homepage = "https://pytest-flask.readthedocs.io/";
-    changelog = "https://github.com/pytest-dev/pytest-flask/blob/${version}/docs/changelog.rst";
+    changelog = "https://github.com/pytest-dev/pytest-flask/blob/${finalAttrs.src.tag}/docs/changelog.rst";
     license = lib.licenses.mit;
     maintainers = with lib.maintainers; [ vanschelven ];
   };
-}
+})