diff --git a/composer.json b/composer.json
index 9137558..ba4a0cd 100644
--- a/composer.json
+++ b/composer.json
@@ -31,11 +31,13 @@
     },
     "require-dev": {
         "ergebnis/composer-normalize": "^2.45",
-        "phan/phan": "^5.4.2",
+        "phan/phan": "^5.4.5",
         "phpstan/phpstan": "^1.12",
         "phpstan/phpstan-strict-rules": "^1.6",
         "phpunit/phpunit": "^8.5.36 || ^9.6.15",
         "psalm/plugin-phpunit": "^0.19",
+        "sabre/event": "^5.1.6",
+        "symfony/filesystem": ">= 5.4.45",
         "vimeo/psalm": "^6.0.0"
     },
     "config": {