diff --git a/composer.json b/composer.json
index 0a0306d..db0d0cd 100644
--- a/composer.json
+++ b/composer.json
@@ -9,7 +9,7 @@
     }
   ],
   "require": {
-    "php": "^7.4",
+    "php": "^8 || ^7.4",
     "wyrihaximus/async-test-utilities": "^4.0.3"
   },
   "require-dev": {},
diff --git a/composer.lock b/composer.lock
index 4f2c2ff..209502f 100644
--- a/composer.lock
+++ b/composer.lock
@@ -4,7 +4,7 @@
         "Read more about it at https://getcomposer.org/doc/01-basic-usage.md#installing-dependencies",
         "This file is @generated automatically"
     ],
-    "content-hash": "31bbeb742e1c71df3d9cc1f90afcfb8a",
+    "content-hash": "7f2b27e0b6e4c6045e7b10098e3b8784",
     "packages": [
         {
             "name": "amphp/amp",
@@ -8504,7 +8504,7 @@
     "prefer-stable": false,
     "prefer-lowest": false,
     "platform": {
-        "php": "^7.4"
+        "php": "^8 || ^7.4"
     },
     "platform-dev": [],
     "platform-overrides": {