diff --git a/core/modules/config/tests/src/Functional/ConfigImportUITest.php b/core/modules/config/tests/src/Functional/ConfigImportUITest.php
index 4094af6..d6839b9 100644
--- a/core/modules/config/tests/src/Functional/ConfigImportUITest.php
+++ b/core/modules/config/tests/src/Functional/ConfigImportUITest.php
@@ -130,6 +130,7 @@ public function testImport() {
     // Verify that there are no further changes to import.
     $this->assertText(t('There are no configuration changes to import.'));
 
+    $this->rebuildContainer();
     // Verify site name has changed.
     $this->assertIdentical($new_site_name, $this->config('system.site')->get('name'));