diff --git a/.github/workflows/flex.yml b/.github/workflows/flex.yml
index 68c2d8e..99ae597 100644
--- a/.github/workflows/flex.yml
+++ b/.github/workflows/flex.yml
@@ -7,7 +7,7 @@ jobs:
         strategy:
             matrix:
                 operating-system: [ubuntu-latest]
-                php-versions: ['8.1', '8.2']
+                php-versions: ['8.1', '8.2', '8.3']
                 composer-options: ['']
                 composer-versions: ['composer:v2']
             fail-fast: false