diff --git a/core/modules/system/src/Tests/Update/UpdatePathTestBaseFilledTest.php b/core/modules/system/src/Tests/Update/UpdatePathTestBaseFilledTest.php
index 30ed37d..623a400 100644
--- a/core/modules/system/src/Tests/Update/UpdatePathTestBaseFilledTest.php
+++ b/core/modules/system/src/Tests/Update/UpdatePathTestBaseFilledTest.php
@@ -18,6 +18,7 @@ class UpdatePathTestBaseFilledTest extends UpdatePathTestBaseTest {
    * {@inheritdoc}
    */
   protected function setDatabaseDumpFiles() {
+    parent::setDatabaseDumpFiles();
     $this->databaseDumpFiles[0] = __DIR__ . '/../../../tests/fixtures/update/drupal-8.filled.standard.php.gz';
   }
 
diff --git a/core/modules/system/tests/fixtures/update/drupal-8.language-enabled.php b/core/modules/system/tests/fixtures/update/drupal-8.language-enabled.php
index 18c819d..d16d762 100644
Binary files a/core/modules/system/tests/fixtures/update/drupal-8.language-enabled.php and b/core/modules/system/tests/fixtures/update/drupal-8.language-enabled.php differ
diff --git a/core/modules/system/tests/fixtures/update/drupal-8.update-test-schema-enabled.php b/core/modules/system/tests/fixtures/update/drupal-8.update-test-schema-enabled.php
index 16042a4..7250741 100644
--- a/core/modules/system/tests/fixtures/update/drupal-8.update-test-schema-enabled.php
+++ b/core/modules/system/tests/fixtures/update/drupal-8.update-test-schema-enabled.php
@@ -26,7 +26,9 @@
 ));
 
 // Set the schema version.
-$connection->insert('key_value')
+$connection->merge('key_value')
+  ->condition('collection', 'system.schema')
+  ->condition('name', 'update_test_schema')
   ->fields([
     'collection' => 'system.schema',
     'name' => 'update_test_schema',