diff --git a/composer.json b/composer.json
index b12d41b..b6ac21a 100644
--- a/composer.json
+++ b/composer.json
@@ -14,7 +14,7 @@
 		"php-parallel-lint/php-parallel-lint": "^1.2",
 		"phpstan/phpstan-phpunit": "^0.12.16",
 		"phpstan/phpstan-strict-rules": "^0.12.6",
-		"phpunit/phpunit": "^7.5.20"
+		"phpunit/phpunit": "^9.5.0"
 	},
 	"config": {
 		"platform": {