diff --git a/pkgs/by-name/co/conftest/package.nix b/pkgs/by-name/co/conftest/package.nix
index 5446094dedec..f7ddb73e8bf8 100644
--- a/pkgs/by-name/co/conftest/package.nix
+++ b/pkgs/by-name/co/conftest/package.nix
@@ -13,6 +13,8 @@ buildGoModule (finalAttrs: {
   pname = "conftest";
   version = "0.62.0";
 
+  __darwinAllowLocalNetworking = true; # required for tests
+
   src = fetchFromGitHub {
     owner = "open-policy-agent";
     repo = "conftest";