diff --git a/system/networking.nix b/system/networking.nix
index 3d4a9ac..c8f884c 100644
--- a/system/networking.nix
+++ b/system/networking.nix
@@ -16,6 +16,7 @@
     enable = true;
     settings = {
       ipv6_servers = true;
+      require_dnssec = true;
 
       sources.public-resolvers = {
         urls = [
@@ -27,7 +28,10 @@
           "RWQf6LRCGA9i53mlYecO4IzT51TGPpvWucNSCh1CBM0QTaLn73Y7GFO3";
       };
 
-      server_names = [ "mullvad-doh" ];
+      server_names = [
+        "quad9-doh-ip4-port443-nofilter-pri"
+        "quad9-doh-ip6-port443-nofilter-pri"
+      ];
     };
   };