diff --git a/composer.json b/composer.json
index 2b4119ed3a0..6dda8c7591e 100644
--- a/composer.json
+++ b/composer.json
@@ -42,7 +42,7 @@
         "jetbrains/phpstorm-stubs": "2020.2",
         "phpstan/phpstan": "0.12.81",
         "phpstan/phpstan-strict-rules": "^0.12.2",
-        "phpunit/phpunit": "9.5.0",
+        "phpunit/phpunit": "9.5.5",
         "psalm/plugin-phpunit": "0.13.0",
         "squizlabs/php_codesniffer": "3.6.0",
         "symfony/cache": "^5.2|^6.0",