diff --git a/composer.json b/composer.json
index afbd963..b590bdf 100644
--- a/composer.json
+++ b/composer.json
@@ -26,7 +26,7 @@
         "drupal/coder": "^8.3",
         "ergebnis/composer-normalize": "^2.42",
         "mikey179/vfsstream": "^1.6",
-        "opis/closure": "^3.6",
+        "opis/closure": "^4.0",
         "phpmd/phpmd": "^2.13",
         "phpstan/phpstan": "^2",
         "phpunit/phpunit": "^11",