diff --git a/composer.json b/composer.json
index fd0ca50..449033e 100644
--- a/composer.json
+++ b/composer.json
@@ -10,7 +10,7 @@
     }
   ],
   "require-dev": {
-    "phpunit/phpunit": "^4.8 || ^5.0 || ^6.0 || ^7.0 || ^8.0 || ^9.0 || ^10.0"
+    "phpunit/phpunit": "^4.8 || ^5.0 || ^6.0 || ^7.0 || ^8.0 || ^9.0 || ^10.0 || ^11.0"
   },
   "autoload": {
     "psr-4": {