diff --git a/composer.json b/composer.json
index a3c51d88..48ec6285 100644
--- a/composer.json
+++ b/composer.json
@@ -34,7 +34,7 @@
         "phpspec/prophecy-phpunit": "^2.0",
         "phpstan/extension-installer": "^1.1.0",
         "phpstan/phpstan": "^1.4",
-        "phpunit/phpunit": "^9.5.16",
+        "phpunit/phpunit": "^9.5.20",
         "squizlabs/php_codesniffer": "^3.6"
     },
     "config": {