diff --git a/composer.json b/composer.json
index 66aae11..b08390d 100644
--- a/composer.json
+++ b/composer.json
@@ -30,7 +30,7 @@
     "require-dev": {
         "dealerdirect/phpcodesniffer-composer-installer": "*",
         "phpcompatibility/php-compatibility": "*",
-        "phpunit/phpunit": "^9.2",
+        "phpunit/phpunit": "^9.3",
         "psy/psysh": "*",
         "slevomat/coding-standard": "*",
         "squizlabs/php_codesniffer": "*"