diff --git a/composer.json b/composer.json
index 8754e6a..f2a038f 100644
--- a/composer.json
+++ b/composer.json
@@ -18,14 +18,14 @@
         }
     ],
     "require": {
-        "php": ">=5.5",
+        "php": ">=8.0",
         "ext-curl": "*",
         "ext-json": "*",
         "ext-mbstring": "*",
-        "guzzlehttp/guzzle": "^6.2"
+        "guzzlehttp/guzzle": "^7.2"
     },
     "require-dev": {
-        "phpunit/phpunit": "^4.8",
+        "phpunit/phpunit": "^9.5.10",
         "squizlabs/php_codesniffer": "~2.6",
         "friendsofphp/php-cs-fixer": "~2.12"
     },