diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index bdcf17ae..7f9208de 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -11,7 +11,7 @@ jobs:
         runs-on: ubuntu-latest
         strategy:
             matrix:
-                php: ['8.0', '8.1', '8.2', '8.3']
+                php: ['8.0', '8.1', '8.2', '8.3', '8.4']
 
             fail-fast: false
 
diff --git a/composer.json b/composer.json
index e25e3663..ee6e0801 100644
--- a/composer.json
+++ b/composer.json
@@ -11,7 +11,7 @@
 		}
 	],
 	"require": {
-		"php": "8.0 - 8.3"
+		"php": "8.0 - 8.4"
 	},
 	"require-dev": {
 		"tracy/tracy": "^2.9",
diff --git a/readme.md b/readme.md
index 9dd3d2be..e75f2773 100644
--- a/readme.md
+++ b/readme.md
@@ -34,7 +34,7 @@ Install Dibi via Composer:
 composer require dibi/dibi
 ```
 
-The Dibi 5.0 requires PHP version 8.0 and supports PHP up to 8.3.
+The Dibi 5.0 requires PHP version 8.0 and supports PHP up to 8.4.
 
 
 Usage