diff --git a/pkgs/development/python-modules/coffea/default.nix b/pkgs/development/python-modules/coffea/default.nix
index 86090e3b2556..538e25ee0157 100644
--- a/pkgs/development/python-modules/coffea/default.nix
+++ b/pkgs/development/python-modules/coffea/default.nix
@@ -88,6 +88,8 @@ buildPythonPackage rec {
     "coffea"
   ];
 
+  __darwinAllowLocalNetworking = true;
+
   meta = with lib; {
     description = "Basic tools and wrappers for enabling not-too-alien syntax when running columnar Collider HEP analysis";
     homepage = "https://github.com/CoffeaTeam/coffea";