diff --git a/composer-require-checker.json b/composer-require-checker.json
new file mode 100644
index 0000000..6e0377f
--- /dev/null
+++ b/composer-require-checker.json
@@ -0,0 +1,6 @@
+{
+    "symbol-whitelist" : [
+        "Composer\\Autoload\\ClassLoader",
+        "JetBrains\\PHPStormStub\\PhpStormStubsMap"
+    ]
+}
diff --git a/composer.json b/composer.json
index 3e6a044..7ad0ce0 100644
--- a/composer.json
+++ b/composer.json
@@ -11,6 +11,7 @@
     ],
     "require": {
         "php": "^8.1",
+        "ext-tokenizer": "*",
         "nikic/php-parser": "^4.15",
         "phpstan/phpdoc-parser": "^1.0",
         "psr/simple-cache": "^3.0",
@@ -22,5 +23,9 @@
         "psr-4": {
             "Typhoon\\Reflection\\": ""
         }
+    },
+    "config": {
+        "lock": false,
+        "vendor-dir": "../../var/Reflection/vendor"
     }
 }