diff --git a/composer.json b/composer.json
index 7afbb08..84bd252 100644
--- a/composer.json
+++ b/composer.json
@@ -39,8 +39,8 @@
         "psr/http-message": "^1"
     },
     "require-dev": {
-        "amphp/http-server": "dev-master as 2",
-        "amphp/websocket-server": "dev-master as 2",
+        "amphp/http-server": "^2",
+        "amphp/websocket-server": "^2-rc2",
         "amphp/phpunit-util": "^1.1",
         "amphp/php-cs-fixer-config": "dev-master",
         "phpunit/phpunit": "^8 || ^7",