diff --git a/composer.json b/composer.json
index c8ca5ea30..f7acff3ff 100644
--- a/composer.json
+++ b/composer.json
@@ -46,7 +46,7 @@
     "phpstan/extension-installer": "^1.1",
     "phpstan/phpstan": "^0.12",
     "phpstan/phpstan-phpunit": "^0.12",
-    "phpunit/phpunit": "^9.5.20",
+    "phpunit/phpunit": "^9.5.21",
     "slam/phpstan-laminas-framework": "^0.12",
     "spatie/phpunit-snapshot-assertions": "^4.2",
     "squizlabs/php_codesniffer": "^3.7"