diff --git a/composer.json b/composer.json
index 5a094006..eccff7ec 100644
--- a/composer.json
+++ b/composer.json
@@ -47,7 +47,7 @@
         "laminas/laminas-coding-standard": "~2.3.0",
         "php-http/psr7-integration-tests": "^1.1.1",
         "phpspec/prophecy-phpunit": "^2.0",
-        "phpunit/phpunit": "^9.1",
+        "phpunit/phpunit": "^9.5",
         "psalm/plugin-phpunit": "^0.17.0",
         "vimeo/psalm": "^4.24.0"
     },
diff --git a/composer.lock b/composer.lock
index 22bafc24..47cde60e 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "9ccb34b5f9697fee0c8e6afe17b7b652",
+    "content-hash": "ab56f78e3052c428dda4d5d8e0cdb17b",
     "packages": [
         {
             "name": "psr/http-factory",