diff --git a/composer.json b/composer.json
index 1424966..e456b6b 100644
--- a/composer.json
+++ b/composer.json
@@ -17,14 +17,14 @@
     ],
     "require": {
         "php": "^7.2|^8.0",
-        "illuminate/console": "^6.0|^7.0|^8.0",
-        "illuminate/contracts": "^6.0|^7.0|^8.0",
-        "illuminate/support": "^6.0|^7.0|^8.0"
+        "illuminate/console": "^6.0|^7.0|^8.0|^9.0",
+        "illuminate/contracts": "^6.0|^7.0|^8.0|^9.0",
+        "illuminate/support": "^6.0|^7.0|^8.0|^9.0"
     },
     "require-dev": {
-        "phpunit/phpunit": "^8.0",
+        "phpunit/phpunit": "^8.0|^9.5.10",
         "scrutinizer/ocular": "~1.1",
-        "squizlabs/php_codesniffer": "~2.3"
+        "squizlabs/php_codesniffer": "~2.3|^3.6"
     },
     "suggest": {
         "moneyphp/money": "Money value object."