diff --git a/composer.json b/composer.json
index 0723d42..8f8672c 100755
--- a/composer.json
+++ b/composer.json
@@ -16,7 +16,7 @@
   "require": {
     "php": "^7.4 | ^8.0",
     "guzzlehttp/psr7": "^2.0",
-    "symfony/serializer": "^2.0 || ^3.0 || ^4.0 || ^5.0",
+    "symfony/serializer": "^2.0 || ^3.0 || ^4.0 || ^5.0 || ^6.0",
     "nesbot/carbon": "^2.42",
     "ext-json": "*",
     "guzzlehttp/guzzle": "^7.8",