diff --git a/composer.json b/composer.json
index c3ae6e4..baa60ec 100644
--- a/composer.json
+++ b/composer.json
@@ -14,8 +14,7 @@
         "composer-runtime-api": "^2.0",
         "psr/http-server-middleware": "^1.0",
         "psr/http-message": "^1.0",
-        "psr/event-dispatcher": "^1.0",
-        "game-worker/kiri-http-message": "~v2.0"
+        "psr/event-dispatcher": "^1.0"
     },
     "autoload": {
         "psr-4": {