diff --git a/.github/workflows/test-unit.yml b/.github/workflows/test-unit.yml
index 644e00686..42ba3277d 100644
--- a/.github/workflows/test-unit.yml
+++ b/.github/workflows/test-unit.yml
@@ -105,6 +105,9 @@ jobs:
       mysql:
         image: mysql:8
         options: --health-cmd="mysqladmin ping" --health-interval=10s --health-timeout=5s --health-retries=5 -e MYSQL_ROOT_PASSWORD=atk4_pass -e MYSQL_USER=atk4_test -e MYSQL_PASSWORD=atk4_pass -e MYSQL_DATABASE=atk4_test__data --entrypoint sh mysql:8 -c "exec docker-entrypoint.sh mysqld --default-authentication-plugin=mysql_native_password"
+      mariadb:
+        image: mariadb
+        options: --health-cmd="mysqladmin ping" --health-interval=10s --health-timeout=5s --health-retries=5 -e MYSQL_ROOT_PASSWORD=atk4_pass -e MYSQL_USER=atk4_test -e MYSQL_PASSWORD=atk4_pass -e MYSQL_DATABASE=atk4_test__data
       postgres:
         image: postgres:12-alpine
         env:
@@ -164,6 +167,10 @@ jobs:
         if: startsWith(matrix.type, 'Phpunit')
         run: "vendor/bin/phpunit --configuration phpunit-mysql.xml.dist \"$(if [ -n \"$LOG_COVERAGE\" ]; then echo '--coverage-text'; else echo '--no-coverage'; fi)\" -v"
 
+      - name: "Run tests: MariaDB (only for Phpunit)"
+        if: startsWith(matrix.type, 'Phpunit')
+        run: "vendor/bin/phpunit --configuration phpunit-mariadb.xml.dist \"$(if [ -n \"$LOG_COVERAGE\" ]; then echo '--coverage-text'; else echo '--no-coverage'; fi)\" -v"
+
       - name: "Run tests: PostgreSQL (only for Phpunit)"
         if: startsWith(matrix.type, 'Phpunit')
         run: "vendor/bin/phpunit --configuration phpunit-pgsql.xml.dist \"$(if [ -n \"$LOG_COVERAGE\" ]; then echo '--coverage-text'; else echo '--no-coverage'; fi)\" -v"
diff --git a/phpunit-mariadb.xml.dist b/phpunit-mariadb.xml.dist
new file mode 100644
index 000000000..c418b315a
--- /dev/null
+++ b/phpunit-mariadb.xml.dist
@@ -0,0 +1,26 @@
+<phpunit bootstrap="vendor/autoload.php" printerClass="Atk4\Core\AtkPhpunit\ResultPrinter" colors="true">
+    <php>
+        <var name="DB_DSN" value="mysql:dbname=atk4_test__data;host=mariadb" />
+        <var name="DB_USER" value="atk4_test" />
+        <var name="DB_PASSWD" value="atk4_pass" />
+        <var name="DB_DBNAME" value="atk4_test__data" />
+    </php>
+    <testsuites>
+        <testsuite name="tests">
+            <directory>tests</directory>
+            <directory>tests-schema</directory>
+        </testsuite>
+    </testsuites>
+    <listeners>
+        <listener class="JohnKary\PHPUnit\Listener\SpeedTrapListener" />
+    </listeners>
+    <coverage>
+        <include>
+            <directory suffix=".php">src</directory>
+            <directory suffix=".php">src-schema</directory>
+        </include>
+        <report>
+            <php outputFile="build/logs/clover-mariadb.cov" />
+        </report>
+    </coverage>
+</phpunit>