Fix build

Author: odan

composer.json

@@ -15,7 +15,8 @@
         "overtrue/phplint": "^1.1",
         "phpstan/phpstan": "^1",
         "phpunit/phpunit": "^8 || ^9",
-        "squizlabs/php_codesniffer": "^3.4"
+        "squizlabs/php_codesniffer": "^3.4",
+        "symfony/event-dispatcher": "6.0.*"
     },
     "autoload": {
         "psr-4": {