diff --git a/composer.json b/composer.json
index b5cd5a3c..748046c0 100644
--- a/composer.json
+++ b/composer.json
@@ -25,7 +25,7 @@
         }
     ],
     "require": {
-        "php": ">=7.1.0,<7.5.0",
+        "php": ">=7.1.0,<7.5.0|>=8.0.0,<8.1.0",
         "ext-json": "*",
         "daverandom/exceptional-json": "^1.0.4",
         "guzzlehttp/guzzle": "^6.5.2 || ^7.0",
@@ -45,14 +45,14 @@
         "phpstan/phpstan-deprecation-rules": "^0.12.2",
         "phpstan/phpstan-phpunit": "^0.12.6",
         "phpstan/phpstan-strict-rules": "^0.12.2",
-        "phpunit/phpunit": "^7.5.20 || ^8.5.2"
+        "phpunit/phpunit": "^7.5.20 || ^8.5.2 || ^9.0"
     },
     "suggest": {
         "ext-curl": "to use curl requests to get the ini file"
     },
     "config": {
         "platform": {
-            "php": "7.1.3"
+            "php": "7.4.0"
         },
         "preferred-install": "dist",
         "sort-packages": true