diff --git a/composer.json b/composer.json
index 085901b..6f415d9 100644
--- a/composer.json
+++ b/composer.json
@@ -12,7 +12,7 @@
         }
     ],
     "require": {
-        "php": ">=7.0",
+        "php": ">=7.2",
         "psr/http-message": "~1.0",
         "psr/http-server-handler":  "~1.0",
         "psr/http-server-middleware": "~1.0"