diff --git a/pkgs/development/python-modules/mpi4py/default.nix b/pkgs/development/python-modules/mpi4py/default.nix
index 97a7aed915e..8584930c31f 100644
--- a/pkgs/development/python-modules/mpi4py/default.nix
+++ b/pkgs/development/python-modules/mpi4py/default.nix
@@ -43,6 +43,8 @@ buildPythonPackage rec {
 
   nativeBuildInputs = [ mpi ];
 
+  __darwinAllowLocalNetworking = true;
+
   nativeCheckInputs = [ openssh ];
 
   meta = with lib; {