diff --git a/README.md b/README.md
index 20cefc2..4212aa3 100644
--- a/README.md
+++ b/README.md
@@ -16,7 +16,7 @@ The free plan is limited to 50,000 requests per month, and doesn't include some
 
 #### Installation
 
-The package works with PHP 8 and is available using [Composer](https://getcomposer.org).
+The package works with PHP 8.1 and is available using [Composer](https://getcomposer.org).
 
 ```shell
 composer require ipinfo/ipinfo
diff --git a/composer.json b/composer.json
index 94f3a18..5b7e180 100644
--- a/composer.json
+++ b/composer.json
@@ -16,7 +16,7 @@
         }
     ],
     "require": {
-        "php": ">=8.0",
+        "php": ">=8.1",
         "ext-json": "*",
         "guzzlehttp/guzzle": "^6.3||^7.0",
         "symfony/cache": "^6.3",