diff --git a/composer.json b/composer.json
index de2a271..2c6382e 100644
--- a/composer.json
+++ b/composer.json
@@ -46,7 +46,7 @@
         "nyholm/psr7": "^1.7",
         "php-http/psr7-integration-tests": "1.1.1",
         "phpstan/phpstan": "^1.10",
-        "phpunit/phpunit": "^9.5",
+        "phpunit/phpunit": "^9.6",
         "squizlabs/php_codesniffer": "^3.7"
     },
     "autoload": {