diff --git a/composer.json b/composer.json
index ccc81ca2..caf6c7ee 100644
--- a/composer.json
+++ b/composer.json
@@ -16,7 +16,7 @@
         }
     ],
     "require": {
-        "php": ">=5.4.0",
+        "php": ">=7.1.0",
         "topthink/think-installer": "~1.0"
     },
     "require-dev": {