diff --git a/composer.json b/composer.json
index e9e290a..276adf7 100644
--- a/composer.json
+++ b/composer.json
@@ -4,7 +4,7 @@
     "keywords": ["i18n", "php-i18n", "language"],
     "type": "library",
     "require": {
-        "php": ">=8.0"
+        "php": ">=7.4"
     },
     "license": "MIT",
     "autoload": {
diff --git a/src/Config/Config.php b/src/Config/Config.php
index aa6b930..ad4c61a 100644
--- a/src/Config/Config.php
+++ b/src/Config/Config.php
@@ -48,7 +48,7 @@ public static function setOptions(array $options): void
         }
     }
 
-    public static function getOptions(string $key = null, mixed $default = null): mixed
+    public static function getOptions(string $key = null, $default = null)
     {
         if ($key) {
             return self::$config[$key] ?? $default;