diff --git a/composer.json b/composer.json
index 9dc91a1..c736351 100644
--- a/composer.json
+++ b/composer.json
@@ -25,11 +25,11 @@
   "minimum-stability": "stable",
   "prefer-stable": true,
   "require": {
-    "php": "^5.6.4|^7.0",
-    "illuminate/support": "^5.4|^6.0|^7.0"
+    "php": "^5.6.4|^7.0|^8.0",
+    "illuminate/support": "^5.4|^6.0|^7.0|^8.0"
   },
   "require-dev": {
-    "orchestra/testbench": "^3.4|^4.0|^5.0",
+    "orchestra/testbench": "~3.6.7|~3.7.8|~3.8.6|^4.8|^5.2|^6.0",
     "phpunit/phpunit": "^5.7.14|^6.0|^7.0|^8.0|^9.0"
   },
   "autoload": {