diff --git a/composer.json b/composer.json
index 6f672a8e9..2ffd5b768 100644
--- a/composer.json
+++ b/composer.json
@@ -28,7 +28,7 @@
 		"phpstan/phpstan-deprecation-rules": "1.1.4",
 		"phpstan/phpstan-phpunit": "1.3.14",
 		"phpstan/phpstan-strict-rules": "1.5.1",
-		"phpunit/phpunit": "7.5.20|8.5.21|9.6.8|10.3.2"
+		"phpunit/phpunit": "8.5.21|9.6.8|10.3.2"
 	},
 	"autoload": {
 		"psr-4": {