diff --git a/composer.json b/composer.json
index 7f85e63..1380a88 100644
--- a/composer.json
+++ b/composer.json
@@ -35,7 +35,7 @@
         "amphp/parallel-functions": "^1.0",
         "amphp/sync": "^1.4",
         "fakerphp/faker": "^1.19",
-        "opis/closure": "^3.6",
+        "opis/closure": "^3.6 || ^4.0",
         "phpstan/phpstan": "^1.10",
         "phpunit/php-invoker": "^2.0|^3.1|^4.0",
         "phpunit/phpunit": "^8.5|^9.6|^10.0",