diff --git a/.laminas-ci.json b/.laminas-ci.json
index df25c51..3dbd79d 100644
--- a/.laminas-ci.json
+++ b/.laminas-ci.json
@@ -1,6 +1,7 @@
 {
     "ignore_php_platform_requirements": {
-        "8.3": false
+        "8.3": false,
+        "8.4": true
     },
     "backwardCompatibilityCheck": true
 }
diff --git a/composer.json b/composer.json
index 088fa3c..6b9b9f1 100644
--- a/composer.json
+++ b/composer.json
@@ -31,7 +31,7 @@
         }
     },
     "require": {
-        "php": "~8.1.0 || ~8.2.0 || ~8.3.0",
+        "php": "~8.1.0 || ~8.2.0 || ~8.3.0 || ~8.4.0",
         "ext-json": "*",
         "laminas/laminas-stdlib": "^3.10.1"
     },
diff --git a/composer.lock b/composer.lock
index bf76f39..76fb549 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": "9d1a5bb9d4c8390c034bbff3ae680a49",
+    "content-hash": "4ccd3d52fea6d47077adf7a6509491df",
     "packages": [
         {
             "name": "laminas/laminas-stdlib",
@@ -4889,14 +4889,14 @@
     ],
     "aliases": [],
     "minimum-stability": "stable",
-    "stability-flags": {},
+    "stability-flags": [],
     "prefer-stable": false,
     "prefer-lowest": false,
     "platform": {
-        "php": "~8.1.0 || ~8.2.0 || ~8.3.0",
+        "php": "~8.1.0 || ~8.2.0 || ~8.3.0 || ~8.4.0",
         "ext-json": "*"
     },
-    "platform-dev": {},
+    "platform-dev": [],
     "platform-overrides": {
         "php": "8.1.99"
     },