diff --git a/README.md b/README.md
index 81a2dd3..9fadbc0 100644
--- a/README.md
+++ b/README.md
@@ -22,6 +22,12 @@ For example, [Zend](http://framework.zend.com/manual/current/en/modules/zend.fee
 composer install shikiryu/shikiryurss
 ```
 
+or 
+
+```php
+include '/path/to/this/library/autoload.php';
+```
+
 ## :rocket: Usage
 
 ----------------------------------
diff --git a/autoload.php b/autoload.php
new file mode 100644
index 0000000..c60d77b
--- /dev/null
+++ b/autoload.php
@@ -0,0 +1,24 @@
+<?php
+
+spl_autoload_register(static function ($class) {
+
+    $folders = explode('\\', $class);
+
+    if ($folders[0] === 'Shikiryu' && $folders[1] === 'SRSS') {
+
+        $folders = array_slice($folders, 2);
+
+        $path = sprintf('%s%ssrc%s%s.php',
+            __DIR__,
+            DIRECTORY_SEPARATOR,
+            DIRECTORY_SEPARATOR,
+            implode(DIRECTORY_SEPARATOR, $folders)
+        );
+
+        if (file_exists($path)) {
+            require $path;
+        }
+
+    }
+
+});
\ No newline at end of file
diff --git a/composer.lock b/composer.lock
index 1454f64..7952830 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "f9098bb855d1eaf15a0ec531f0903ae9",
+    "content-hash": "f6a1c2940a5181b2d7e1d4709db556d3",
     "packages": [],
     "packages-dev": [
         {
@@ -623,16 +623,16 @@
         },
         {
             "name": "phpunit/phpunit",
-            "version": "9.6.6",
+            "version": "9.6.7",
             "source": {
                 "type": "git",
                 "url": "https://github.com/sebastianbergmann/phpunit.git",
-                "reference": "b65d59a059d3004a040c16a82e07bbdf6cfdd115"
+                "reference": "c993f0d3b0489ffc42ee2fe0bd645af1538a63b2"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/b65d59a059d3004a040c16a82e07bbdf6cfdd115",
-                "reference": "b65d59a059d3004a040c16a82e07bbdf6cfdd115",
+                "url": "https://api.github.com/repos/sebastianbergmann/phpunit/zipball/c993f0d3b0489ffc42ee2fe0bd645af1538a63b2",
+                "reference": "c993f0d3b0489ffc42ee2fe0bd645af1538a63b2",
                 "shasum": ""
             },
             "require": {
@@ -706,7 +706,7 @@
             "support": {
                 "issues": "https://github.com/sebastianbergmann/phpunit/issues",
                 "security": "https://github.com/sebastianbergmann/phpunit/security/policy",
-                "source": "https://github.com/sebastianbergmann/phpunit/tree/9.6.6"
+                "source": "https://github.com/sebastianbergmann/phpunit/tree/9.6.7"
             },
             "funding": [
                 {
@@ -722,7 +722,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2023-03-27T11:43:46+00:00"
+            "time": "2023-04-14T08:58:40+00:00"
         },
         {
             "name": "sebastian/cli-parser",
@@ -1745,7 +1745,9 @@
     "prefer-stable": false,
     "prefer-lowest": false,
     "platform": {
-        "ext-dom": "*"
+        "php": ">=8.0",
+        "ext-dom": "*",
+        "ext-libxml": "*"
     },
     "platform-dev": [],
     "plugin-api-version": "2.1.0"