diff --git a/composer.json b/composer.json
index 6f1580f..0d005d2 100644
--- a/composer.json
+++ b/composer.json
@@ -28,12 +28,12 @@
     },
     "require": {
         "php": "^5.6|^7.1",
-        "illuminate/support": "^5.2|^6.0|^7.0",
+        "illuminate/support": "^5.2|^6.0|^7.0|^8.0",
         "nexmo/client": "^2.0"
     },
     "require-dev": {
         "phpunit/phpunit": "^5.3|~6.0|~8.0",
-        "orchestra/testbench": "~3.0|^4.0|^5.0"
+        "orchestra/testbench": "~3.0|^4.0|^5.0|^6.0"
     },
     "autoload": {
         "psr-4": {