diff --git a/.github/workflows/benchmarks.yml b/.github/workflows/benchmarks.yml
index 88cef877..a5936338 100644
--- a/.github/workflows/benchmarks.yml
+++ b/.github/workflows/benchmarks.yml
@@ -13,7 +13,7 @@ jobs:
     strategy:
       matrix:
         php-version:
-          - "8.3"
+          - "8.4"
         operating-system:
           - "ubuntu-latest"
 
@@ -28,7 +28,10 @@ jobs:
           ini-values: memory_limit=-1
           tools: composer:v2, cs2pr
           extensions: bcmath, mbstring, intl, sodium, json
-
+      - name: "Ignore PHP platform requirements"
+        if: matrix.php-versions == '8.4'
+        run: |
+          export COMPOSER_IGNORE_PLATFORM_REQ=php+
       - name: "caching dependencies"
         uses: "actions/cache@v4"
         with:
diff --git a/.github/workflows/code-coverage.yml b/.github/workflows/code-coverage.yml
index c0484ea7..07ecb4d4 100644
--- a/.github/workflows/code-coverage.yml
+++ b/.github/workflows/code-coverage.yml
@@ -17,11 +17,15 @@ jobs:
       - name: "installing PHP"
         uses: "shivammathur/setup-php@v2"
         with:
-          php-version: "8.3"
+          php-version: "8.4"
           ini-values: memory_limit=-1
           tools: composer:v2, cs2pr
           extensions: bcmath, mbstring, intl, sodium, json
 
+      - name: "Ignore PHP platform requirements"
+        run: |
+          export COMPOSER_IGNORE_PLATFORM_REQ=php+
+
       - name: "installing dependencies"
         run: |
           make install -j10 -O
diff --git a/.github/workflows/coding-standards.yml b/.github/workflows/coding-standards.yml
index 835c9bbf..c5a44c48 100644
--- a/.github/workflows/coding-standards.yml
+++ b/.github/workflows/coding-standards.yml
@@ -15,11 +15,15 @@ jobs:
       - name: "installing PHP"
         uses: "shivammathur/setup-php@v2"
         with:
-          php-version: "8.3"
+          php-version: "8.4"
           ini-values: memory_limit=-1
           tools: composer:v2, cs2pr
           extensions: bcmath, mbstring, intl, sodium, json
 
+      - name: "Ignore PHP platform requirements"
+        run: |
+          export COMPOSER_IGNORE_PLATFORM_REQ=php+
+
       - name: "installing dependencies"
         run: |
           make install -j10 -O
diff --git a/.github/workflows/documentation-check.yml b/.github/workflows/documentation-check.yml
index d583dbc2..655dcdc0 100644
--- a/.github/workflows/documentation-check.yml
+++ b/.github/workflows/documentation-check.yml
@@ -15,11 +15,15 @@ jobs:
       - name: "installing PHP"
         uses: "shivammathur/setup-php@v2"
         with:
-          php-version: "8.3"
+          php-version: "8.4"
           ini-values: memory_limit=-1
           tools: composer:v2, cs2pr
           extensions: bcmath, mbstring, intl, sodium, json
 
+      - name: "Ignore PHP platform requirements"
+        run: |
+          export COMPOSER_IGNORE_PLATFORM_REQ=php+
+
       - name: "installing dependencies"
         run: |
           make install -j10 -O
diff --git a/.github/workflows/mutation-tests.yml b/.github/workflows/mutation-tests.yml
index 7d7d0f8b..18ca37c9 100644
--- a/.github/workflows/mutation-tests.yml
+++ b/.github/workflows/mutation-tests.yml
@@ -13,7 +13,7 @@ jobs:
     strategy:
       matrix:
         php-version:
-          - "8.3"
+          - "8.4"
         operating-system:
           - "ubuntu-latest"
 
@@ -38,6 +38,10 @@ jobs:
           key: "php-${{ matrix.php-version }}"
           restore-keys: "php-${{ matrix.php-version }}"
 
+      - name: "Ignore PHP platform requirements"
+        run: |
+          export COMPOSER_IGNORE_PLATFORM_REQ=php+
+
       - name: "installing dependencies"
         run: |
           make install -j10
diff --git a/.github/workflows/preload-check.yml b/.github/workflows/preload-check.yml
index bf3c6e06..8cea21ac 100644
--- a/.github/workflows/preload-check.yml
+++ b/.github/workflows/preload-check.yml
@@ -15,7 +15,7 @@ jobs:
       - name: "installing PHP"
         uses: "shivammathur/setup-php@v2"
         with:
-          php-version: "8.3"
+          php-version: "8.4"
           ini-values: memory_limit=-1
           tools: composer:v2, cs2pr
           extensions: bcmath, mbstring, intl, sodium, json
diff --git a/.github/workflows/security-analysis.yml b/.github/workflows/security-analysis.yml
index 2fc53704..8d9831a3 100644
--- a/.github/workflows/security-analysis.yml
+++ b/.github/workflows/security-analysis.yml
@@ -15,11 +15,15 @@ jobs:
       - name: "installing PHP"
         uses: "shivammathur/setup-php@v2"
         with:
-          php-version: "8.3"
+          php-version: "8.4"
           ini-values: memory_limit=-1
           tools: composer:v2, cs2pr
           extensions: bcmath, mbstring, intl, sodium, json
 
+      - name: "Ignore PHP platform requirements"
+        run: |
+          export COMPOSER_IGNORE_PLATFORM_REQ=php+
+
       - name: "installing dependencies"
         run: |
           make install -j10 -O
diff --git a/.github/workflows/static-analysis.yml b/.github/workflows/static-analysis.yml
index 56a18f02..34d33c34 100644
--- a/.github/workflows/static-analysis.yml
+++ b/.github/workflows/static-analysis.yml
@@ -17,11 +17,15 @@ jobs:
       - name: "installing PHP"
         uses: "shivammathur/setup-php@v2"
         with:
-          php-version: "8.3"
+          php-version: "8.4"
           ini-values: memory_limit=-1
           tools: composer:v2, cs2pr
           extensions: bcmath, mbstring, intl, sodium, json
 
+      - name: "Ignore PHP platform requirements"
+        run: |
+          export COMPOSER_IGNORE_PLATFORM_REQ=php+
+
       - name: "installing dependencies"
         run: |
           make install -j10 -O
diff --git a/.github/workflows/unit-tests.yml b/.github/workflows/unit-tests.yml
index cfdb3430..cf425011 100644
--- a/.github/workflows/unit-tests.yml
+++ b/.github/workflows/unit-tests.yml
@@ -15,6 +15,7 @@ jobs:
         php-version:
           - "8.2"
           - "8.3"
+          - "8.4"
         operating-system:
           - "macos-latest"
           - "ubuntu-latest"
@@ -41,6 +42,11 @@ jobs:
           key: "php-${{ matrix.php-version }}"
           restore-keys: "php-${{ matrix.php-version }}"
 
+      - name: "Ignore PHP platform requirements"
+        if: matrix.php-versions == '8.4'
+        run: |
+          export COMPOSER_IGNORE_PLATFORM_REQ=php+
+
       - name: "installing dependencies"
         run: |
           make install -j10
diff --git a/Makefile b/Makefile
index d619b7a4..8e0e50f7 100644
--- a/Makefile
+++ b/Makefile
@@ -2,7 +2,7 @@ help:
 	@awk 'BEGIN {FS = ":.*?## "} /^[a-zA-Z_\-\.]+:.*?## / {printf "\033[36m%-30s\033[0m %s\n", $$1, $$2}' $(MAKEFILE_LIST)
 
 install:                                                              			## install all dependencies for a development environment
-	composer install
+	COMPOSER_IGNORE_PLATFORM_REQ=php+ composer install
 
 coding-standard-fix:                                                            ## apply automated coding standard fixes
 	PHP_CS_FIXER_IGNORE_ENV=1 ./vendor/bin/php-cs-fixer fix --config=config/.php_cs.dist.php
diff --git a/composer.json b/composer.json
index 6127ff32..392ca0d7 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",
         "ext-bcmath": "*",
         "ext-json": "*",
         "ext-mbstring": "*",
diff --git a/composer.lock b/composer.lock
index a41893b1..a3d30aef 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": "97465cc59bebf30479efdae3608e548a",
+    "content-hash": "96e8a3659280b296c7389255024734c4",
     "packages": [
         {
             "name": "revolt/event-loop",
@@ -7403,17 +7403,17 @@
     ],
     "aliases": [],
     "minimum-stability": "stable",
-    "stability-flags": [],
+    "stability-flags": {},
     "prefer-stable": false,
     "prefer-lowest": false,
     "platform": {
-        "php": "~8.2.0 || ~8.3.0",
+        "php": "~8.2.0 || ~8.3.0 || ~8.4.0",
         "ext-bcmath": "*",
         "ext-json": "*",
         "ext-mbstring": "*",
         "ext-sodium": "*",
         "ext-intl": "*"
     },
-    "platform-dev": [],
+    "platform-dev": {},
     "plugin-api-version": "2.6.0"
 }