diff --git a/composer.json b/composer.json
index efc685e..1fa692c 100644
--- a/composer.json
+++ b/composer.json
@@ -31,11 +31,11 @@
     ],
     "require": {
         "php": "^7.2",
-        "illuminate/support": "^6.0|^7.0"
+        "illuminate/support": "^6.0|^7.0|^8.0"
     },
     "require-dev": {
-        "orchestra/testbench": "^4.0",
-        "phpunit/phpunit": "^8.5"
+        "orchestra/testbench": "^4.0|^6.0",
+        "phpunit/phpunit": "^8.5|^9.0"
     },
     "autoload": {
         "psr-4": {