diff --git a/composer.json b/composer.json
index 33c4ef5..a5d3eda 100644
--- a/composer.json
+++ b/composer.json
@@ -25,7 +25,7 @@
     "php": "7.4.*||8.*",
     "guzzlehttp/guzzle": "^7.0",
     "codeception/codeception": "4.*||5.*",
-    "phpunit/phpunit": "^8.5 || ^9.0 || ^10.0",
+    "phpunit/phpunit": "^8.5 || ^9.0 || ^10.0 || ^11.0",
     "jfcherng/php-diff": "^6.14"
   },
   "require-dev": {