diff --git a/Xendit/M2Invoice/composer.json b/Xendit/M2Invoice/composer.json
index 506de5f..9a269b1 100644
--- a/Xendit/M2Invoice/composer.json
+++ b/Xendit/M2Invoice/composer.json
@@ -7,7 +7,7 @@
     "GPL-3.0"
   ],
   "require": {
-    "php": "~7.1.3||~7.2.0||~7.3.0||~7.4.0",
+    "php": "~7.1.3||~7.2.0||~7.3.0||~7.4.0||~8.1.0",
     "magento/module-sales": ">=102.0.3",
     "magento/module-checkout": ">=100.3.3",
     "magento/module-payment": ">=100.3.3",