diff --git a/composer.json b/composer.json
index 04ce3c2..8f55906 100644
--- a/composer.json
+++ b/composer.json
@@ -20,7 +20,7 @@
     ]
   },
   "require": {
-    "php": ">= 8.1",
+    "php": ">= 8.0",
     "game-worker/kiri-container": "*",
     "game-worker/kiri-client": "*"
   },