diff --git a/composer.json b/composer.json
index 5250dcb..06214d4 100644
--- a/composer.json
+++ b/composer.json
@@ -11,7 +11,7 @@
     }
   ],
   "require": {
-    "php": "~7.1"
+    "php": ">=7.1"
   },
   "autoload": {
     "psr-4": {
diff --git a/composer.lock b/composer.lock
index 6a98371..5e0aee4 100644
--- a/composer.lock
+++ b/composer.lock
@@ -1,10 +1,10 @@
 {
     "_readme": [
         "This file locks the dependencies of your project to a known state",
-        "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#composer-lock-the-lock-file",
+        "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "b7e7b54a6729139f4efd79fab1ca0f31",
+    "content-hash": "ee3ec210298af87d070eb16b736a8a2d",
     "packages": [],
     "packages-dev": [],
     "aliases": [],
@@ -13,7 +13,8 @@
     "prefer-stable": false,
     "prefer-lowest": false,
     "platform": {
-        "php": "~7.1"
+        "php": ">=7.1"
     },
-    "platform-dev": []
+    "platform-dev": [],
+    "plugin-api-version": "2.0.0"
 }