diff --git a/TelegramBotBase/Localizations/English.cs b/TelegramBotBase/Localizations/English.cs
index 51881b1..d69bbe2 100644
--- a/TelegramBotBase/Localizations/English.cs
+++ b/TelegramBotBase/Localizations/English.cs
@@ -1,6 +1,6 @@
 namespace TelegramBotBase.Localizations;
 
-public class English : Localization
+public sealed class English : Localization
 {
     public English()
     {
diff --git a/TelegramBotBase/Localizations/German.cs b/TelegramBotBase/Localizations/German.cs
index 52afbf7..6380635 100644
--- a/TelegramBotBase/Localizations/German.cs
+++ b/TelegramBotBase/Localizations/German.cs
@@ -1,6 +1,6 @@
 namespace TelegramBotBase.Localizations;
 
-public class German : Localization
+public sealed class German : Localization
 {
     public German()
     {