diff --git a/pkgs/development/python-modules/functions-framework/default.nix b/pkgs/development/python-modules/functions-framework/default.nix
index d80198bfd1ce..fa7b692b6a71 100644
--- a/pkgs/development/python-modules/functions-framework/default.nix
+++ b/pkgs/development/python-modules/functions-framework/default.nix
@@ -1,27 +1,34 @@
 {
   lib,
   buildPythonPackage,
+  fetchFromGitHub,
+  pythonAtLeast,
+
+  # build-system
+  setuptools,
+
+  # dependencies
   click,
   cloudevents,
   deprecation,
-  docker,
-  fetchFromGitHub,
   flask,
   gunicorn,
-  httpx,
-  pretend,
-  pytest-asyncio,
-  pytestCheckHook,
-  requests,
-  setuptools,
   starlette,
   uvicorn,
   uvicorn-worker,
   watchdog,
   werkzeug,
+
+  # tests
+  docker,
+  httpx,
+  pretend,
+  pytest-asyncio,
+  pytestCheckHook,
+  requests,
 }:
 
-buildPythonPackage rec {
+buildPythonPackage (finalAttrs: {
   pname = "functions-framework";
   version = "3.10.1";
   pyproject = true;
@@ -29,7 +36,7 @@ buildPythonPackage rec {
   src = fetchFromGitHub {
     owner = "GoogleCloudPlatform";
     repo = "functions-framework-python";
-    tag = "v${version}";
+    tag = "v${finalAttrs.version}";
     hash = "sha256-CEH0PokH3lhyJl7OPIpJkaKZxAUp1fYVia89DtGoJ7k=";
   };
 
@@ -62,6 +69,11 @@ buildPythonPackage rec {
 
   pythonImportsCheck = [ "functions_framework" ];
 
+  disabledTestPaths = lib.optionals (pythonAtLeast "3.14") [
+    # _pickle.PicklingError: Can't pickle local object <function Flask.__init__.<locals>.<lambda> at 0x7ffff47e54e0>
+    "tests/test_timeouts.py"
+  ];
+
   disabledTests = [
     # Test requires a running Docker instance
     "test_cloud_run_http"
@@ -70,8 +82,8 @@ buildPythonPackage rec {
   meta = {
     description = "FaaS (Function as a service) framework for writing portable Python functions";
     homepage = "https://github.com/GoogleCloudPlatform/functions-framework-python";
-    changelog = "https://github.com/GoogleCloudPlatform/functions-framework-python/blob/${src.tag}/CHANGELOG.md";
+    changelog = "https://github.com/GoogleCloudPlatform/functions-framework-python/blob/${finalAttrs.src.tag}/CHANGELOG.md";
     license = lib.licenses.asl20;
     maintainers = with lib.maintainers; [ fab ];
   };
-}
+})