diff --git a/composer.json b/composer.json
index e649da4a..cdf57f7d 100644
--- a/composer.json
+++ b/composer.json
@@ -23,7 +23,7 @@
     },
     "require-dev": {
         "friendsofphp/php-cs-fixer": "^3.26",
-        "phan/phan": "^5.4",
+        "phan/phan": "^5.4 || ^6.0",
         "phpunit/phpunit": "^10.5",
         "phpstan/phpstan": "^1.10",
         "ext-gd": "*"