diff --git a/composer.json b/composer.json
index 70ab64a..4a683ae 100755
--- a/composer.json
+++ b/composer.json
@@ -8,8 +8,8 @@
     ],
     "require": {
         "php": ">=5.6",
-        "guzzlehttp/guzzle": "~6.5",
-        "firebase/php-jwt": "~5.2",
+        "guzzlehttp/guzzle": "~6.5 || ^7.0",
+        "firebase/php-jwt": "~6.4",
         "ext-json": "*",
         "ext-openssl": "*"
     },
diff --git a/src/Client.php b/src/Client.php
index 92765c4..af7d919 100644
--- a/src/Client.php
+++ b/src/Client.php
@@ -47,7 +47,7 @@ public function __construct(ClientInterface $httpClient, Config $config)
     public function verifyAndDecodeJwt($jwtToken)
     {
         return new JwtVerifyResponse(
-            JWT::decode($jwtToken, $this->getApplePublicKey(), ['RS256'])
+            JWT::decode($jwtToken, $this->getApplePublicKey())
         );
     }