diff --git a/lib/domain/models/test_configuration.dart b/lib/domain/models/test_configuration.dart
index 5a9eb20..c4657d4 100644
--- a/lib/domain/models/test_configuration.dart
+++ b/lib/domain/models/test_configuration.dart
@@ -7,7 +7,7 @@ class TestConfiguration {
   final int parallelStreams;
 
   const TestConfiguration({
-    this.server = 'iperf.es.net',
+    this.server = 'speedtest.uztelecom.uz',
     this.port = 5201,
     this.duration = const Duration(seconds: 10),
     this.interval = 1,
diff --git a/lib/main_headless.dart b/lib/main_headless.dart
index 143aedf..b3615c3 100644
--- a/lib/main_headless.dart
+++ b/lib/main_headless.dart
@@ -25,7 +25,7 @@ import 'package:iperf3gui/domain/services/iperf3_runner.dart';
 
 /// Test parameters, supplied at build time with --dart-define.
 const String _server = String.fromEnvironment('IPERF_SERVER',
-    defaultValue: 'iperf.es.net');
+    defaultValue: 'speedtest.uztelecom.uz');
 const int _port = int.fromEnvironment('IPERF_PORT', defaultValue: 5201);
 const int _seconds = int.fromEnvironment('IPERF_SECONDS', defaultValue: 10);
 const int _streams = int.fromEnvironment('IPERF_STREAMS', defaultValue: 1);
diff --git a/lib/ui/features/test_run/test_run_screen.dart b/lib/ui/features/test_run/test_run_screen.dart
index 1b5e6aa..b1a82c0 100644
--- a/lib/ui/features/test_run/test_run_screen.dart
+++ b/lib/ui/features/test_run/test_run_screen.dart
@@ -110,7 +110,7 @@ class _TestRunContentState extends State<_TestRunContent> {
               autocorrect: false,
               decoration: const InputDecoration(
                 labelText: 'Server',
-                hintText: 'e.g. iperf.es.net or 192.168.1.1',
+                hintText: 'e.g. speedtest.uztelecom.uz or 192.168.1.1',
               ),
             ),
             const SizedBox(height: 12),