diff --git a/composer.json b/composer.json
index 371b97de..d93c6bba 100644
--- a/composer.json
+++ b/composer.json
@@ -46,7 +46,7 @@
         "http-interop/http-factory-tests": "^0.9.0",
         "laminas/laminas-coding-standard": "~2.5.0",
         "php-http/psr7-integration-tests": "^1.3",
-        "phpunit/phpunit": "^9.5.28",
+        "phpunit/phpunit": "^10.0.0",
         "psalm/plugin-phpunit": "^0.18.4",
         "vimeo/psalm": "^5.9"
     },
diff --git a/composer.lock b/composer.lock
index f687472d..a9e178b0 100644
--- a/composer.lock
+++ b/composer.lock
@@ -3998,16 +3998,16 @@
         },
         {
             "name": "vimeo/psalm",
-            "version": "5.13.0",
+            "version": "5.13.1",
             "source": {
                 "type": "git",
                 "url": "https://github.com/vimeo/psalm.git",
-                "reference": "a0a9c27630bcf8301ee78cb06741d2907d8c9fef"
+                "reference": "086b94371304750d1c673315321a55d15fc59015"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/vimeo/psalm/zipball/a0a9c27630bcf8301ee78cb06741d2907d8c9fef",
-                "reference": "a0a9c27630bcf8301ee78cb06741d2907d8c9fef",
+                "url": "https://api.github.com/repos/vimeo/psalm/zipball/086b94371304750d1c673315321a55d15fc59015",
+                "reference": "086b94371304750d1c673315321a55d15fc59015",
                 "shasum": ""
             },
             "require": {
@@ -4098,9 +4098,9 @@
             ],
             "support": {
                 "issues": "https://github.com/vimeo/psalm/issues",
-                "source": "https://github.com/vimeo/psalm/tree/5.13.0"
+                "source": "https://github.com/vimeo/psalm/tree/5.13.1"
             },
-            "time": "2023-06-24T17:05:12+00:00"
+            "time": "2023-06-27T16:39:49+00:00"
         },
         {
             "name": "webimpress/coding-standard",