diff --git a/composer.json b/composer.json
index 96c6c3a..2cbd445 100644
--- a/composer.json
+++ b/composer.json
@@ -26,7 +26,7 @@
   "require-dev": {
     "symfony/security-bundle": "^4.1.9 | ^5",
     "symfony/yaml": "^4.1.9 | ^5",
-    "phpunit/phpunit": "^8.0.4",
+    "phpunit/phpunit": "^9.6.10",
     "phpstan/phpstan": "^1",
     "php-coveralls/php-coveralls": "^2.1"
   },