diff --git a/composer.json b/composer.json
index 39c4f29..6ad2afe 100644
--- a/composer.json
+++ b/composer.json
@@ -19,7 +19,7 @@
   },
   "require-dev": {
     "laminas/laminas-coding-standard": "^3.1",
-    "phpunit/phpunit": "^12.5.14",
+    "phpunit/phpunit": "^13.0.0",
     "psalm/plugin-phpunit": "^0.19.5",
     "vimeo/psalm": "6.15.1",
     "amphp/parallel": "^2.3.3",