diff --git a/composer.json b/composer.json
index ae05c5a..47488cd 100644
--- a/composer.json
+++ b/composer.json
@@ -13,8 +13,8 @@
         }
     ],
     "require": {
-        "php": ">=5.5.0",
-        "guzzlehttp/guzzle": ">=4.0,<7.0"
+        "php": ">=7.2.0",
+        "guzzlehttp/guzzle": ">=4.0,<8.0"
     },
     "require-dev": {
         "phpunit/phpunit": "4.8.*",