diff --git a/pkgs/development/python-modules/ephemeral-port-reserve/default.nix b/pkgs/development/python-modules/ephemeral-port-reserve/default.nix
index dc3148f36230..76d14e191cac 100644
--- a/pkgs/development/python-modules/ephemeral-port-reserve/default.nix
+++ b/pkgs/development/python-modules/ephemeral-port-reserve/default.nix
@@ -29,6 +29,8 @@ buildPythonPackage {
     "test_fqdn"
   ];
 
+  __darwinAllowLocalNetworking = true;
+
   pythonImportsCheck = [
     "ephemeral_port_reserve"
   ];