diff --git a/composer.json b/composer.json
index e4768d0..3322fbb 100644
--- a/composer.json
+++ b/composer.json
@@ -15,7 +15,7 @@
     }
   ],
   "require": {
-    "php": ">=7.2",
+    "php": ">=7.0",
     "qiniu/php-sdk": "^7.2",
     "endroid/qr-code": "^1.9",
     "topthink/framework": "5.1.*",