diff --git a/composer.json b/composer.json
index 421309d..e352c08 100644
--- a/composer.json
+++ b/composer.json
@@ -16,7 +16,7 @@
         }
     ],
     "require": {
-        "php": ">=7.1",
+        "php": ">=5.6",
         "doctrine/orm": "2.6.*"
     },
     "autoload": {