diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 5a90c01..1d27028 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -6,8 +6,8 @@ jobs:
 
     strategy:
       matrix:
-        php: [ '8.2', '8.3' ]
-        mysql-version: [ 'mysql:5.5', 'mysql:5.6', 'mysql:5.7', 'mysql:8.0', 'mysql:8.4', 'mariadb:5.5', 'mariadb:10.0', 'mariadb:10.1', 'percona:5.7', 'percona:8.0' ]
+        php: [ '8.2', '8.3', '8.4' ]
+        mysql-version: [ 'mysql:5.5' ]
 
     services:
       mysql:
@@ -28,9 +28,6 @@ jobs:
           sudo /etc/init.d/mysql start
           mysql_tzinfo_to_sql /usr/share/zoneinfo | mysql -u root mysql -proot
 
-      - name: Debug matrix values
-        run: echo "Using PHP ${{ matrix.php }} and MySQL ${{ matrix.mysql-version }}"
-
       - name: Setup PHP, with composer and extensions
         uses: shivammathur/setup-php@v2
         with: