diff --git a/composer.json b/composer.json
index 912befa..251cd22 100644
--- a/composer.json
+++ b/composer.json
@@ -12,7 +12,7 @@
   ],
   "minimum-stability": "stable",
   "require": {
-    "php": ">=7.1",
+    "php": ">=7.0",
     "ext-mbstring": "*",
     "lib-openssl": "*"
   },