diff --git a/.github/workflows/tests.yaml b/.github/workflows/tests.yaml
index e3ad67ec..84fd3410 100644
--- a/.github/workflows/tests.yaml
+++ b/.github/workflows/tests.yaml
@@ -141,7 +141,7 @@ jobs:
         uses: shivammathur/setup-php@v2
         with:
           # @todo Switch to PHP 8.5 once Box is fully PHP 8.5 compatible
-          php-version: 8.4
+          php-version: 8.5
           ini-file: development
           tools: composer:v2