diff --git a/clients/sellingpartner-api-aa-php/composer.json b/clients/sellingpartner-api-aa-php/composer.json
index a8af5829..0539e835 100644
--- a/clients/sellingpartner-api-aa-php/composer.json
+++ b/clients/sellingpartner-api-aa-php/composer.json
@@ -1,6 +1,6 @@
 {
     "name": "spapi/auth-and-auth",
-    "description": "This library provides helper classes for use when signing HTTP requests for Amazon Selling Partner APIs.",
+    "description": "Amazon Selling Partner APIs official client library.",
     "type": "library",
     "keywords": [
         "sp-api",
@@ -19,17 +19,21 @@
         }
     ],
     "require": {
-        "php": "^7.4 || ^8.0",
+        "php": "^8.3",
         "ext-json": "*",
-        "guzzlehttp/guzzle": "^7.3",
+        "guzzlehttp/guzzle": "^7.9",
         "guzzlehttp/psr7": "^2.0",
         "aws/aws-sdk-php": "^3.228",
-        "symfony/http-kernel": "^5.4",
-        "symfony/rate-limiter": "^5.2",
-        "vlucas/phpdotenv": "^5.5"
+        "symfony/http-kernel": "^7.2",
+        "symfony/rate-limiter": "^7.2",
+        "vlucas/phpdotenv": "^5.6",
+        "ext-openssl": "*"
+    },
+    "conflict": {
+        "guzzlehttp/guzzle": ">=8.0"
     },
     "require-dev": {
-        "phpunit/phpunit": "^9.0",
+        "phpunit/phpunit": "^9.6",
         "squizlabs/php_codesniffer": "^3.7"
     },
     "autoload": {
@@ -48,4 +52,4 @@
         "fix": "phpcs --standard=PSR12 sdk/src/authandauth sdk/src/tests/",
         "test": "phpunit sdk/tests/authandauth"
     }
-}
+}
\ No newline at end of file