diff --git a/composer.json b/composer.json
index 45f932a..48f2314 100644
--- a/composer.json
+++ b/composer.json
@@ -22,19 +22,19 @@
         }
     ],
     "require": {
-        "php": "^7.0",
+        "php": "^7.2",
         "illuminate/config": ">=5.5.0",
         "illuminate/database": ">=5.5.0",
         "illuminate/support": ">=5.5.0",
-        "kalnoy/nestedset": "^4.3"
+        "kalnoy/nestedset": "^5.0"
     },
     "require-dev": {
         "codedungeon/phpunit-result-printer": "^0.4.4",
         "friendsofphp/php-cs-fixer": "^1.11",
         "mockery/mockery": "^0.9.4",
         "orchestra/database": "~3.5.0",
-        "orchestra/testbench": "~3.5.0",
-        "phpunit/phpunit": "^6.2 || ^7.0",
+        "orchestra/testbench": "~3.5.0|~4.0",
+        "phpunit/phpunit": "^6.2 || ^7.0|^8.0",
         "squizlabs/php_codesniffer": "3.*",
         "scrutinizer/ocular": "^1.3"
     },