diff --git a/composer.json b/composer.json
index 6f65d88..cde10b0 100644
--- a/composer.json
+++ b/composer.json
@@ -11,7 +11,7 @@
     ],
     "require": {
         "php": ">=5.6.0",
-        "illuminate/contracts": "^5.0"
+        "illuminate/contracts": "^5.0|^6.0|^7.0|^8.0"
     },
     "require-dev": {
         "phpspec/phpspec": "^3.4"