diff --git a/composer.json b/composer.json
index 525328e..fa8ddda 100644
--- a/composer.json
+++ b/composer.json
@@ -13,7 +13,7 @@
     }
   },
   "require-dev": {
-    "phpunit/phpunit": "^12.0",
+    "phpunit/phpunit": "^13.1",
     "phpstan/phpstan": "^2.0",
     "phpstan/extension-installer": "^1.0",
     "tomasvotruba/type-coverage": "^2.0"