diff --git a/src/TgBotLib/Methods/DeleteWebhook.php b/src/TgBotLib/Methods/DeleteWebhook.php
index affce6c..22ac0c6 100644
--- a/src/TgBotLib/Methods/DeleteWebhook.php
+++ b/src/TgBotLib/Methods/DeleteWebhook.php
@@ -11,7 +11,7 @@
         /**
          * @inheritDoc
          */
-        public static function execute(Bot $bot, array $parameters = []): mixed
+        public static function execute(Bot $bot, array $parameters = []): bool
         {
             return self::executeCurl(self::buildPost($bot, Methods::DELETE_WEBHOOK->value, $parameters));
         }