diff --git a/composer.json b/composer.json
index 7e63fc9..53f9a58 100644
--- a/composer.json
+++ b/composer.json
@@ -22,7 +22,7 @@
         "phpstan/phpstan-deprecation-rules": "^1.0",
         "phpstan/phpstan-phpunit": "^1.1",
         "phpstan/phpstan-strict-rules": "^1.4",
-        "phpunit/phpunit": "^10.0.16"
+        "phpunit/phpunit": "^13.0.0"
     },
     "provide": {
         "chimera/serialization-implementation": "0.5.0"