diff --git a/composer.json b/composer.json
index 3e1d6ba..5bb3922 100644
--- a/composer.json
+++ b/composer.json
@@ -18,7 +18,7 @@
         "issues": "https://github.com/tekintian/google-authenticator/issues"
     },
     "require": {
-        "php": ">=7.0",
+        "php": ">=5.6",
         "tekintian/phpqrcode": "1.0"
     },
 	"autoload": {