diff --git a/composer.json b/composer.json
index f068c00..ad88049 100644
--- a/composer.json
+++ b/composer.json
@@ -21,7 +21,7 @@
   },
   "require-dev": {
     "infection/infection": "*",
-    "phpunit/phpunit": "^9.3",
+    "phpunit/phpunit": "^11.5",
     "phpstan/phpstan": "*",
     "roave/security-advisories": "dev-master"
   },