diff --git a/composer.json b/composer.json
index 4ea1415..79ef854 100644
--- a/composer.json
+++ b/composer.json
@@ -23,7 +23,7 @@
         }
     ],
     "require": {
-        "php": ">=7.0.0",
+        "php": ">=7.1.0",
         "ext-dom": "*",
         "ext-libxml": "*",
         "ext-simplexml": "*",