diff --git a/composer.json b/composer.json
index 28fcf22..cf392e8 100644
--- a/composer.json
+++ b/composer.json
@@ -20,11 +20,11 @@
     ],
     "require": {
         "php": "^7.2",
-        "illuminate/support": "^6.0"
+        "illuminate/support": "5.*|6.*|^7.0"
     },
     "require-dev": {
-        "orchestra/testbench": "^4.0",
-        "phpunit/phpunit": "^8.0"
+        "orchestra/testbench": "3.*|4.*|5.*",
+        "phpunit/phpunit": "6.*|7.*|8.*|9.*"
     },
     "autoload": {
         "psr-4": {