diff --git a/.github/workflows/cgl.yaml b/.github/workflows/cgl.yaml
index eba80bfa..e68a4e7b 100644
--- a/.github/workflows/cgl.yaml
+++ b/.github/workflows/cgl.yaml
@@ -20,7 +20,7 @@ jobs:
       - name: Setup PHP
         uses: shivammathur/setup-php@v2
         with:
-          php-version: 8.3
+          php-version: 8.4
           tools: composer:v2, composer-require-checker, composer-unused, cs2pr
           coverage: none
 
diff --git a/.github/workflows/release.yaml b/.github/workflows/release.yaml
index 51eb184c..7facd774 100644
--- a/.github/workflows/release.yaml
+++ b/.github/workflows/release.yaml
@@ -61,7 +61,7 @@ jobs:
       - name: Setup PHP
         uses: shivammathur/setup-php@v2
         with:
-          php-version: 8.3
+          php-version: 8.4
           extensions: intl, mbstring, json, zip, curl
           tools: composer:v2, typo3/tailor
 
diff --git a/.github/workflows/tests.yaml b/.github/workflows/tests.yaml
index 99b385a7..d2f8dc2d 100644
--- a/.github/workflows/tests.yaml
+++ b/.github/workflows/tests.yaml
@@ -84,7 +84,7 @@ jobs:
       - name: Setup PHP
         uses: shivammathur/setup-php@v2
         with:
-          php-version: 8.3
+          php-version: 8.4
           tools: composer:v2
           coverage: none
 
diff --git a/composer.json b/composer.json
index 3e214943..9fcb6ada 100644
--- a/composer.json
+++ b/composer.json
@@ -12,7 +12,7 @@
 		}
 	],
 	"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": "*",
 		"doctrine/dbal": "^3.0 || ^4.0",
 		"psr/event-dispatcher": "^1.0",