diff --git a/firefox/user.js b/firefox/user.js
index 520ea8c..caaf66a 100644
--- a/firefox/user.js
+++ b/firefox/user.js
@@ -29,6 +29,7 @@ user_pref("media.autoplay.default", 5);
 user_pref("network.allow-experiments", false);
 user_pref("network.dns.disablePrefetch", true);
 user_pref("network.protocol-handler.external.mailto", false);
+user_pref("network.trr.mode", 5);
 user_pref("pdfjs.disabled", true);
 user_pref("permissions.default.camera", 2);
 user_pref("permissions.default.desktop-notification", 2);