diff --git a/.github/workflows/phpunit-mysql.yml b/.github/workflows/phpunit-mysql.yml
index 988010b6..b4bcd291 100644
--- a/.github/workflows/phpunit-mysql.yml
+++ b/.github/workflows/phpunit-mysql.yml
@@ -39,7 +39,7 @@ jobs:
     strategy:
       matrix:
         php-versions: ['8.0', '8.1', '8.2']
-        server-versions: ['master']
+        server-versions: ['master', 'stable28']
 
     services:
       mysql: