diff --git a/modules/testing/test-instrumentation.nix b/modules/testing/test-instrumentation.nix
index dd61e68d9d1..84671028ba0 100644
--- a/modules/testing/test-instrumentation.nix
+++ b/modules/testing/test-instrumentation.nix
@@ -81,8 +81,8 @@ in
     services.syslogd.extraConfig = "*.*,kern.none /dev/ttyS0";
 
     # Prevent tests from accessing the Internet.
-    networking.defaultGateway = mkOverride 50 {} "";
-    networking.nameservers = mkOverride 50 {} [ ];
+    networking.defaultGateway = mkOverride 200 {} "";
+    networking.nameservers = mkOverride 200 {} [ ];
 
   };