diff --git a/.github/workflows/backend.yml b/.github/workflows/backend.yml
index e333a40..acf9359 100644
--- a/.github/workflows/backend.yml
+++ b/.github/workflows/backend.yml
@@ -8,5 +8,6 @@ jobs:
     with:
       enable_backend_testing: false
       enable_phpstan: true
+      php_versions: '["8.0", "8.1", "8.2", "8.3"]'
 
       backend_directory: .
diff --git a/composer.json b/composer.json
index 1c4def1..28d5669 100644
--- a/composer.json
+++ b/composer.json
@@ -11,6 +11,7 @@
         "email": "helpdesk@blomstra.net"
     },
     "require": {
+        "php": "^8.0",
         "flarum/core": "^1.3.1",
         "league/flysystem-aws-s3-v3": "*",
         "vlucas/phpdotenv": "^5.4"