diff --git a/pkgs/development/python-modules/pygls/default.nix b/pkgs/development/python-modules/pygls/default.nix
index 7e424f21dee8..d29ea2658c5a 100644
--- a/pkgs/development/python-modules/pygls/default.nix
+++ b/pkgs/development/python-modules/pygls/default.nix
@@ -36,6 +36,9 @@ buildPythonPackage rec {
     pytestCheckHook
   ];
 
+  # Fixes hanging tests on Darwin
+  __darwinAllowLocalNetworking = true;
+
   pythonImportsCheck = [ "pygls" ];
 
   meta = with lib; {