diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 9bf8048..3781976 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -11,7 +11,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        php-versions: ['8.3', '8.4']
+        php-versions: ['8.4', '8.5']
         dependency-versions: [ 'highest', 'lowest' ]
     runs-on: ubuntu-latest
     steps:
diff --git a/composer.json b/composer.json
index ef370d3..e52628c 100644
--- a/composer.json
+++ b/composer.json
@@ -35,7 +35,7 @@
     "phpstan/phpstan-symfony": "^2"
   },
   "require": {
-    "php": "^8.3",
+    "php": "^8.4",
     "symfony/cache": "^7.0",
     "symfony/contracts": "^2.5|^3.4",
     "phpmailer/phpmailer": "^6.6",