diff --git a/composer.json b/composer.json
index defeb9e..e346838 100644
--- a/composer.json
+++ b/composer.json
@@ -23,7 +23,7 @@
     "require-dev": {
         "doctrine/coding-standard": "^11.0.0",
         "php-standard-library/psalm-plugin": "^2.2.1",
-        "phpunit/phpunit": "^9.5.27",
+        "phpunit/phpunit": "^10.0.0",
         "psalm/plugin-phpunit": "^0.18.4",
         "roave/infection-static-analysis-plugin": "^1.26.0",
         "squizlabs/php_codesniffer": "^3.7.1",