diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index e7dd24d74b..dcf39c4943 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -20,7 +20,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        php-versions: ['8.2', '8.3', '8.4']
+        php-versions: ['8.4']
         # see https://mariadb.com/kb/en/mariadb-server-release-dates/
         # this should be a current release, e.g. the LTS version
         mariadb-versions: ['10.6']
@@ -32,7 +32,7 @@ jobs:
         static-analysis: ['no']
         experimental: [false]
         include:
-          - php-versions: '8.2'
+          - php-versions: '8.4'
             mariadb-versions: '' # skip mariadb setup
             postgresql-versions: '' # skip postgresql setup
             static-analysis: 'yes'
@@ -40,7 +40,7 @@ jobs:
             dependencies: 'highest'
 
           # Build for minimum dependencies.
-          - php-versions: '8.2'
+          - php-versions: '8.4'
             mariadb-versions: '10.2'
             postgresql-versions: '10-alpine'
             static-analysis: 'no'
diff --git a/Neos.Cache/composer.json b/Neos.Cache/composer.json
index 83e3be77a9..f3ba84db0d 100644
--- a/Neos.Cache/composer.json
+++ b/Neos.Cache/composer.json
@@ -5,7 +5,7 @@
     "homepage": "http://flow.neos.io",
     "license": ["MIT"],
     "require": {
-        "php": "^8.2",
+        "php": "^8.4",
         "psr/simple-cache": "^2.0 || ^3.0",
         "psr/cache": "^2.0 || ^3.0",
         "psr/log": "^2.0 || ^3.0",
diff --git a/Neos.Eel/composer.json b/Neos.Eel/composer.json
index ddc48a05dd..23c927734c 100644
--- a/Neos.Eel/composer.json
+++ b/Neos.Eel/composer.json
@@ -4,7 +4,7 @@
     "license": ["MIT"],
     "description": "The Embedded Expression Language (Eel) is a building block for creating Domain Specific Languages",
     "require": {
-        "php": "^8.2",
+        "php": "^8.4",
         "neos/flow": "self.version",
         "neos/cache": "self.version",
         "neos/utility-unicode": "self.version",
diff --git a/Neos.Error.Messages/composer.json b/Neos.Error.Messages/composer.json
index efc97bdd15..d6daae2d0d 100644
--- a/Neos.Error.Messages/composer.json
+++ b/Neos.Error.Messages/composer.json
@@ -5,7 +5,7 @@
     "homepage": "http://flow.neos.io",
     "license": "MIT",
     "require": {
-        "php": "^8.0"
+        "php": "^8.4"
     },
     "require-dev": {
         "phpunit/phpunit": "~9.1"
diff --git a/Neos.Flow.Log/composer.json b/Neos.Flow.Log/composer.json
index 25bf694be0..ca94cdf612 100644
--- a/Neos.Flow.Log/composer.json
+++ b/Neos.Flow.Log/composer.json
@@ -7,7 +7,7 @@
         "MIT"
     ],
     "require": {
-        "php": "^8.2",
+        "php": "^8.4",
         "neos/utility-files": "self.version",
         "psr/log": "^2.0 || ^3.0"
     },
diff --git a/Neos.Flow/Classes/ObjectManagement/Proxy/Compiler.php b/Neos.Flow/Classes/ObjectManagement/Proxy/Compiler.php
index b54c92cd33..97599bbfd6 100644
--- a/Neos.Flow/Classes/ObjectManagement/Proxy/Compiler.php
+++ b/Neos.Flow/Classes/ObjectManagement/Proxy/Compiler.php
@@ -141,7 +141,7 @@ public function getProxyClass(string $fullClassName): ProxyClass|false
             return false;
         }
 
-        if (method_exists($classReflection, 'isEnum') && $classReflection->isEnum()) {
+        if ($classReflection->isEnum()) {
             return false;
         }
 
diff --git a/Neos.Flow/composer.json b/Neos.Flow/composer.json
index 1f3ada347a..c37e1e59ef 100644
--- a/Neos.Flow/composer.json
+++ b/Neos.Flow/composer.json
@@ -6,7 +6,7 @@
     "license": ["MIT"],
 
     "require": {
-        "php": "^8.2",
+        "php": "^8.4",
 
         "ext-zlib": "*",
         "ext-SPL": "*",
diff --git a/Neos.FluidAdaptor/composer.json b/Neos.FluidAdaptor/composer.json
index aa1350940e..68ae3186c5 100644
--- a/Neos.FluidAdaptor/composer.json
+++ b/Neos.FluidAdaptor/composer.json
@@ -6,7 +6,7 @@
     "MIT"
   ],
   "require": {
-    "php": "^8.2",
+    "php": "^8.4",
     "neos/flow": "self.version",
     "neos/cache": "self.version",
     "neos/utility-files": "self.version",
diff --git a/Neos.Http.Factories/composer.json b/Neos.Http.Factories/composer.json
index 0b700ddd6a..32b54731b6 100644
--- a/Neos.Http.Factories/composer.json
+++ b/Neos.Http.Factories/composer.json
@@ -7,7 +7,7 @@
         "MIT"
     ],
     "require": {
-        "php": "^8.2",
+        "php": "^8.4",
         "psr/http-factory": "^1.0",
         "guzzlehttp/psr7": "^1.8.4 || ^2.1.1"
     },
diff --git a/Neos.Kickstarter/composer.json b/Neos.Kickstarter/composer.json
index 186c84a7b6..089188561b 100644
--- a/Neos.Kickstarter/composer.json
+++ b/Neos.Kickstarter/composer.json
@@ -4,7 +4,7 @@
     "description": "A simple generator for controller and views.",
     "license": "MIT",
     "require": {
-        "php": "^8.2",
+        "php": "^8.4",
         "neos/flow": "self.version",
         "neos/fluid-adaptor": "self.version",
         "neos/utility-arrays": "self.version"
diff --git a/Neos.Utility.Arrays/composer.json b/Neos.Utility.Arrays/composer.json
index 3aefe6e797..08621a6175 100644
--- a/Neos.Utility.Arrays/composer.json
+++ b/Neos.Utility.Arrays/composer.json
@@ -5,7 +5,7 @@
   "homepage": "http://flow.neos.io",
   "license": "MIT",
   "require": {
-    "php": "^8.2",
+    "php": "^8.4",
     "neos/utility-objecthandling": "self.version"
   },
   "require-dev": {
diff --git a/Neos.Utility.Files/composer.json b/Neos.Utility.Files/composer.json
index 8e7fde3e23..502f367649 100644
--- a/Neos.Utility.Files/composer.json
+++ b/Neos.Utility.Files/composer.json
@@ -5,7 +5,7 @@
   "homepage": "http://flow.neos.io",
   "license": "MIT",
   "require": {
-    "php": "^8.2",
+    "php": "^8.4",
     "neos/error-messages": "self.version"
   },
   "require-dev": {
diff --git a/Neos.Utility.MediaTypes/composer.json b/Neos.Utility.MediaTypes/composer.json
index d79ab08073..b076bf48f0 100644
--- a/Neos.Utility.MediaTypes/composer.json
+++ b/Neos.Utility.MediaTypes/composer.json
@@ -5,7 +5,7 @@
   "homepage": "http://flow.neos.io",
   "license": "MIT",
   "require": {
-    "php": "^8.0"
+    "php": "^8.4"
   },
   "require-dev": {
     "mikey179/vfsstream": "^1.6.10",
diff --git a/Neos.Utility.ObjectHandling/composer.json b/Neos.Utility.ObjectHandling/composer.json
index fbba668e5e..45aeb82eec 100644
--- a/Neos.Utility.ObjectHandling/composer.json
+++ b/Neos.Utility.ObjectHandling/composer.json
@@ -5,7 +5,7 @@
   "homepage": "http://flow.neos.io",
   "license": "MIT",
   "require": {
-    "php": "^8.0"
+    "php": "^8.4"
   },
   "require-dev": {
     "phpunit/phpunit": "~9.1",
diff --git a/Neos.Utility.OpcodeCache/composer.json b/Neos.Utility.OpcodeCache/composer.json
index f0b3d019bb..72c26ac32c 100644
--- a/Neos.Utility.OpcodeCache/composer.json
+++ b/Neos.Utility.OpcodeCache/composer.json
@@ -5,7 +5,7 @@
   "homepage": "http://flow.neos.io",
   "license": "MIT",
   "require": {
-    "php": "^8.0"
+    "php": "^8.4"
   },
   "autoload": {
     "psr-4": {
diff --git a/Neos.Utility.Pdo/composer.json b/Neos.Utility.Pdo/composer.json
index 7b1afeb101..15710f1535 100644
--- a/Neos.Utility.Pdo/composer.json
+++ b/Neos.Utility.Pdo/composer.json
@@ -5,7 +5,7 @@
   "homepage": "http://flow.neos.io",
   "license": "MIT",
   "require": {
-    "php": "^8.0"
+    "php": "^8.4"
   },
   "autoload": {
     "psr-4": {
diff --git a/Neos.Utility.Schema/composer.json b/Neos.Utility.Schema/composer.json
index e5f13762e2..3227933332 100644
--- a/Neos.Utility.Schema/composer.json
+++ b/Neos.Utility.Schema/composer.json
@@ -5,7 +5,7 @@
   "homepage": "http://flow.neos.io",
   "license": "MIT",
   "require": {
-    "php": "^8.2",
+    "php": "^8.4",
     "neos/error-messages": "self.version"
   },
   "require-dev": {
diff --git a/Neos.Utility.Unicode/composer.json b/Neos.Utility.Unicode/composer.json
index 1c3ddcdf54..e90156f0a7 100644
--- a/Neos.Utility.Unicode/composer.json
+++ b/Neos.Utility.Unicode/composer.json
@@ -8,7 +8,7 @@
     "bin-dir": "bin"
   },
   "require": {
-    "php": "^8.2",
+    "php": "^8.4",
     "ext-mbstring": "*"
   },
   "require-dev": {
diff --git a/composer.json b/composer.json
index 9bf75ac0c7..1c22894133 100644
--- a/composer.json
+++ b/composer.json
@@ -17,7 +17,7 @@
     },
     "require": {
         "behat/behat": "^3.10",
-        "php": "^8.2",
+        "php": "^8.4",
         "psr/simple-cache": "^2.0 || ^3.0",
         "psr/cache": "^2.0 || ^3.0",
         "psr/log": "^2.0 || ^3.0",