diff --git a/composer.json b/composer.json
index 1cc0e2c..4b19f6a 100644
--- a/composer.json
+++ b/composer.json
@@ -7,7 +7,7 @@
     ],
     "license": "MIT",
     "require": {
-        "php": "^7.3|^8.0",
+        "php": "^7.3|^8.0|^8.1",
         "php-http/discovery": "^1.6",
         "psr/http-client": "^1.0",
         "psr/http-factory": "^1.0",
@@ -54,7 +54,9 @@
     },
     "config": {
         "allow-plugins": {
-            "dealerdirect/phpcodesniffer-composer-installer": true
+            "dealerdirect/phpcodesniffer-composer-installer": true,
+            "php-http/discovery": true,
+            "ocramius/package-versions": true
         }
     }
 }