diff --git a/composer.json b/composer.json
index 1d3667a..8ec8322 100644
--- a/composer.json
+++ b/composer.json
@@ -11,7 +11,7 @@
     ],
     "license": "MIT",
     "require": {
-        "php": ">=5.6",
+        "php": ">=7.1",
         "ext-pdo": "*"
     },
     "require-dev": {