diff --git a/app/src/main/java/eu/neilalexander/yggdrasil/DnsActivity.kt b/app/src/main/java/eu/neilalexander/yggdrasil/DnsActivity.kt
index 264a335..f3f9ed8 100644
--- a/app/src/main/java/eu/neilalexander/yggdrasil/DnsActivity.kt
+++ b/app/src/main/java/eu/neilalexander/yggdrasil/DnsActivity.kt
@@ -13,6 +13,7 @@ import androidx.preference.PreferenceManager
 import com.google.android.material.textfield.TextInputEditText
 
 const val KEY_DNS_SERVERS = "dns_servers"
+const val KEY_DNS_VERSION = "dns_version"
 const val KEY_ENABLE_CHROME_FIX = "enable_chrome_fix"
 
 class DnsActivity : AppCompatActivity() {
@@ -41,10 +42,10 @@ class DnsActivity : AppCompatActivity() {
         val descriptionRevertron = getString(R.string.dns_server_info_revertron)
         // Here we can add some other DNS servers in a future
         defaultDnsServers = hashMapOf(
-            "302:7991::53" to Pair(getString(R.string.location_amsterdam), descriptionRevertron),
-            "302:db60::53" to Pair(getString(R.string.location_prague), descriptionRevertron),
-            "300:6223::53" to Pair(getString(R.string.location_bratislava), descriptionRevertron),
-            "301:1088::53" to Pair(getString(R.string.location_buffalo), descriptionRevertron),
+            "308:62:45:62::" to Pair(getString(R.string.location_amsterdam), descriptionRevertron),
+            "308:84:68:55::" to Pair(getString(R.string.location_frankfurt), descriptionRevertron),
+            "308:25:40:bd::" to Pair(getString(R.string.location_bratislava), descriptionRevertron),
+            "308:c8:48:45::" to Pair(getString(R.string.location_buffalo), descriptionRevertron),
         )
 
         serversTableLayout = findViewById(R.id.configuredDnsTableLayout)
diff --git a/app/src/main/java/eu/neilalexander/yggdrasil/GlobalApplication.kt b/app/src/main/java/eu/neilalexander/yggdrasil/GlobalApplication.kt
index 85f9a09..49a544b 100644
--- a/app/src/main/java/eu/neilalexander/yggdrasil/GlobalApplication.kt
+++ b/app/src/main/java/eu/neilalexander/yggdrasil/GlobalApplication.kt
@@ -8,6 +8,7 @@ import android.os.Build
 import android.service.quicksettings.TileService
 import androidx.annotation.RequiresApi
 import androidx.core.app.NotificationCompat
+import androidx.preference.PreferenceManager
 
 const val PREF_KEY_ENABLED = "enabled"
 const val MAIN_CHANNEL_ID = "Yggdrasil Service"
@@ -15,7 +16,7 @@ const val MAIN_CHANNEL_ID = "Yggdrasil Service"
 class GlobalApplication: Application(), YggStateReceiver.StateReceiver {
     private lateinit var config: ConfigurationProxy
     private var currentState: State = State.Disabled
-    var updaterConnections: Int = 0
+    private var updaterConnections: Int = 0
 
     override fun onCreate() {
         super.onCreate()
@@ -24,6 +25,7 @@ class GlobalApplication: Application(), YggStateReceiver.StateReceiver {
         callback.register()
         val receiver = YggStateReceiver(this)
         receiver.register(this)
+        migrateDnsServers(this)
     }
 
     fun subscribe() {
@@ -64,6 +66,28 @@ class GlobalApplication: Application(), YggStateReceiver.StateReceiver {
     }
 }
 
+fun migrateDnsServers(context: Context) {
+    val preferences = PreferenceManager.getDefaultSharedPreferences(context)
+    if (preferences.getInt(KEY_DNS_VERSION, 0) >= 1) {
+        return
+    }
+    val serverString = preferences.getString(KEY_DNS_SERVERS, "")
+    if (serverString!!.isNotEmpty()) {
+        // Replacing old Revertron's servers by new ones
+        val newServers = serverString
+            .replace("300:6223::53", "308:25:40:bd::")
+            .replace("302:7991::53", "308:62:45:62::")
+            .replace("302:db60::53", "308:84:68:55::")
+            .replace("301:1088::53", "308:c8:48:45::")
+        val editor = preferences.edit()
+        editor.putInt(KEY_DNS_VERSION, 1)
+        if (newServers != serverString) {
+            editor.putString(KEY_DNS_SERVERS, newServers)
+        }
+        editor.apply()
+    }
+}
+
 fun createServiceNotification(context: Context, state: State): Notification {
     createNotificationChannels(context)
 
diff --git a/app/src/main/res/values-ru/strings.xml b/app/src/main/res/values-ru/strings.xml
index 35be1ee..0a38dee 100644
--- a/app/src/main/res/values-ru/strings.xml
+++ b/app/src/main/res/values-ru/strings.xml
@@ -73,9 +73,9 @@
     <string name="tile_enabled">Включено (Нет подключения)</string>
     <string name="tile_connected">Подключено</string>
     <string name="location_amsterdam">Амстердам, Нидерланды</string>
-    <string name="location_prague">Прага, Чехия</string>
+    <string name="location_frankfurt">Франкфурт, Германия</string>
     <string name="location_bratislava">Братислава, Словакия</string>
-    <string name="location_buffalo">Баффало, США</string>
+    <string name="location_buffalo">Буффало, США</string>
     <string name="channel_name">Сервис VPN</string>
     <string name="channel_description">Главный канал нотификаций сервиса</string>
     <string name="permission_notification_text">Нажмите здесь чтобы включить Yggdrasil.</string>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 7bf2dac..a2398f4 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -73,7 +73,7 @@
     <string name="tile_enabled">Enabled (No connectivity)</string>
     <string name="tile_connected">Connected</string>
     <string name="location_amsterdam">Amsterdam, NL</string>
-    <string name="location_prague">Prague, CZ</string>
+    <string name="location_frankfurt">Frankfurt, DE</string>
     <string name="location_bratislava">Bratislava, SK</string>
     <string name="location_buffalo">Buffalo, US</string>
     <string name="channel_name">VPN Service</string>