diff --git a/composer.json b/composer.json
index 861a72d0..eeb8337a 100644
--- a/composer.json
+++ b/composer.json
@@ -25,7 +25,7 @@
     "require-dev": {
         "doctrine/coding-standard": "^12.0.0",
         "php-standard-library/psalm-plugin": "^2.2.1",
-        "phpunit/phpunit": "^9.5.27",
+        "phpunit/phpunit": "^11.1.1",
         "psalm/plugin-phpunit": "^0.18.4",
         "roave/infection-static-analysis-plugin": "^1.27.0",
         "roave/security-advisories": "dev-master",