diff --git a/composer.json b/composer.json
index 212818c81..b61264ec0 100644
--- a/composer.json
+++ b/composer.json
@@ -14,7 +14,7 @@
         }
     ],
     "require": {
-        "php": "^7.1.3",
+        "php": "^7.1.3|^8",
         "ext-dom": "*",
         "ext-json": "*",
         "ext-libxml": "*",