diff --git a/autoload.php b/autoload.php
index 67f363e..f0b9674 100644
--- a/autoload.php
+++ b/autoload.php
@@ -12,7 +12,7 @@
     'IvoPetkov\HTMLServerComponentsCompiler' => __DIR__ . '/src/HTMLServerComponentsCompiler.php'
 );
 
-spl_autoload_register(function ($class) use ($classes) {
+spl_autoload_register(function ($class) use ($classes): void {
     if (isset($classes[$class])) {
         require $classes[$class];
     }
diff --git a/composer.json b/composer.json
index 44ccc74..781e262 100644
--- a/composer.json
+++ b/composer.json
@@ -15,7 +15,7 @@
         }
     ],
     "require": {
-        "php": "7.0.*|7.1.*|7.2.*|7.3.*|7.4.*|8.0.*|8.1.*|8.2.*|8.3.*",
+        "php": "8.0.*|8.1.*|8.2.*|8.3.*|8.4.*",
         "ivopetkov/html5-dom-document-php": "^2.5"
     },
     "require-dev": {