diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 6d1aba6f..e39da9fa 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -22,6 +22,7 @@ jobs:
         php-version:
           - "8.2"
           - "8.3"
+          - "8.4"
         composer-version:
           - "2.4"
           - "2.5"
diff --git a/composer.json b/composer.json
index 91f0339a..4bdd43b8 100644
--- a/composer.json
+++ b/composer.json
@@ -10,7 +10,7 @@
         }
     ],
     "require": {
-        "php": "~8.2.0 || ~8.3.0",
+        "php": "~8.2.0 || ~8.3.0 || ~8.4.0",
         "composer-runtime-api": "^2.2",
         "symfony/console": "^5.4 || ^6.0 || ^7.0",
         "symfony/process": "^5.4.46 || ^6.4.14 || ^7.1.7"
diff --git a/composer.lock b/composer.lock
index 0296683e..6c7dc66e 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": "8ce48c16900cbf765bc24d4222344f14",
+    "content-hash": "34d724c57795d12b7104f8235b2bf497",
     "packages": [
         {
             "name": "psr/container",
@@ -3381,7 +3381,7 @@
     "prefer-stable": false,
     "prefer-lowest": false,
     "platform": {
-        "php": "~8.2.0 || ~8.3.0",
+        "php": "~8.2.0 || ~8.3.0 || ~8.4.0",
         "composer-runtime-api": "^2.2"
     },
     "platform-dev": {},