diff --git a/pkgs/development/python-modules/mitmproxy/default.nix b/pkgs/development/python-modules/mitmproxy/default.nix
index a99e31d0c1ff..ece5106a75e2 100644
--- a/pkgs/development/python-modules/mitmproxy/default.nix
+++ b/pkgs/development/python-modules/mitmproxy/default.nix
@@ -96,6 +96,8 @@ buildPythonPackage rec {
     sed 's/>=\([0-9]\.\?\)\+\( \?, \?<\([0-9]\.\?\)\+\)\?\( \?, \?!=\([0-9]\.\?\)\+\)\?//' -i setup.py
   '';
 
+  __darwinAllowLocalNetworking = true;
+
   preCheck = ''
     export HOME=$(mktemp -d)
   '';