diff --git a/.laminas-ci.json b/.laminas-ci.json
index e06d8dd..6238f6f 100644
--- a/.laminas-ci.json
+++ b/.laminas-ci.json
@@ -1,3 +1,6 @@
 {
-    "ignore_php_platform_requirements": {}
+    "ignore_php_platform_requirements": {
+        "8.4": true
+    },
+    "backwardCompatibilityCheck": true
 }
diff --git a/composer.json b/composer.json
index 44656b7..1ccab6f 100644
--- a/composer.json
+++ b/composer.json
@@ -34,7 +34,7 @@
         }
     },
     "require": {
-        "php": "~8.1.0 || ~8.2.0 || ~8.3.0",
+        "php": "~8.1.0 || ~8.2.0 || ~8.3.0 || ~8.4.0",
         "laminas/laminas-servicemanager": "^3.21.0",
         "laminas/laminas-view": "^2.27.0",
         "mezzio/mezzio-helpers": "^5.15.0",
@@ -45,9 +45,9 @@
     },
     "require-dev": {
         "laminas/laminas-coding-standard": "~2.5.0",
-        "phpunit/phpunit": "^10.5.10",
+        "phpunit/phpunit": "^10.5.36",
         "psalm/plugin-phpunit": "^0.19.0",
-        "vimeo/psalm": "^5.21.1"
+        "vimeo/psalm": "^5.26.1"
     },
     "conflict": {
         "container-interop/container-interop": "<1.2.0",
diff --git a/composer.lock b/composer.lock
index 74cb03f..345fadd 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": "8d035619f45aeee59094784aad9a6588",
+    "content-hash": "991e5e300f20ebcb326fac617ab1ae9d",
     "packages": [
         {
             "name": "fig/http-message-util",
@@ -4925,13 +4925,13 @@
     ],
     "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"
     },
-    "platform-dev": {},
+    "platform-dev": [],
     "platform-overrides": {
         "php": "8.1.99"
     },