diff --git a/.github/workflows/validation.yml b/.github/workflows/validation.yml
index c8b361f..5bf9f0c 100644
--- a/.github/workflows/validation.yml
+++ b/.github/workflows/validation.yml
@@ -9,7 +9,7 @@ jobs:
     strategy:
       matrix:
         os: ['ubuntu-latest']
-        php-versions: ['8.3']
+        php-versions: ['8.3', '8.4']
     steps:
       - uses: actions/checkout@v2
       - uses: shivammathur/setup-php@v2