diff --git a/pkgs/development/python-modules/werkzeug/default.nix b/pkgs/development/python-modules/werkzeug/default.nix
index 4c40b4df1f08..f961d0359db4 100644
--- a/pkgs/development/python-modules/werkzeug/default.nix
+++ b/pkgs/development/python-modules/werkzeug/default.nix
@@ -5,6 +5,7 @@
 , fetchPypi
 , watchdog
 , dataclasses
+, ephemeral-port-reserve
 , pytest-timeout
 , pytest-xprocess
 , pytestCheckHook
@@ -31,6 +32,7 @@ buildPythonPackage rec {
   ];
 
   checkInputs = [
+    ephemeral-port-reserve
     pytest-timeout
     pytest-xprocess
     pytestCheckHook
@@ -40,6 +42,11 @@ buildPythonPackage rec {
     "test_get_machine_id"
   ];
 
+  disabledTestPaths = [
+    # ConnectionRefusedError: [Errno 111] Connection refused
+    "tests/test_serving.py"
+  ];
+
   pytestFlagsArray = [
     # don't run tests that are marked with filterwarnings, they fail with
     # warnings._OptionError: unknown warning category: 'pytest.PytestUnraisableExceptionWarning'