diff --git a/composer.json b/composer.json
index 4ea0866..d3538cf 100644
--- a/composer.json
+++ b/composer.json
@@ -23,7 +23,7 @@
     }
   },
   "require-dev": {
-    "phpunit/phpunit": "9.5.10",
+    "phpunit/phpunit": "10.0.18",
     "vimeo/psalm": "4.9.1"
   }
 }