diff --git a/core/modules/taxonomy/tests/src/Functional/ThemeTest.php b/core/modules/taxonomy/tests/src/Functional/ThemeTest.php
index 532164353a55284f4923be3aa398b8d44705fe6a..f3dc3dd59c6ab18b62f6084263cefbcad4eddd45 100644
--- a/core/modules/taxonomy/tests/src/Functional/ThemeTest.php
+++ b/core/modules/taxonomy/tests/src/Functional/ThemeTest.php
@@ -19,10 +19,10 @@ protected function setUp(): void {
 
     // Make sure we are using distinct default and administrative themes for
     // the duration of these tests.
-    \Drupal::service('theme_installer')->install(['bartik', 'seven']);
+    \Drupal::service('theme_installer')->install(['olivero', 'claro']);
     $this->config('system.theme')
-      ->set('default', 'bartik')
-      ->set('admin', 'seven')
+      ->set('default', 'olivero')
+      ->set('admin', 'claro')
       ->save();
 
     // Create and log in as a user who has permission to add and edit taxonomy
@@ -44,20 +44,20 @@ public function testTaxonomyTermThemes() {
     $this->drupalGet('admin/structure/taxonomy/manage/' . $vocabulary->id() . '/add');
     // Check that the administrative theme's CSS appears on the page for adding
     // a taxonomy term.
-    $this->assertSession()->responseContains('seven/css/base/elements.css');
+    $this->assertSession()->responseContains('claro/css/base/elements.css');
 
     // Viewing a taxonomy term should use the default theme.
     $term = $this->createTerm($vocabulary);
     $this->drupalGet('taxonomy/term/' . $term->id());
     // Check that the default theme's CSS appears on the page for viewing
     // a taxonomy term.
-    $this->assertSession()->responseContains('bartik/css/base/elements.css');
+    $this->assertSession()->responseContains('olivero/css/base/base.css');
 
     // Editing a taxonomy term should use the same theme as adding one.
     $this->drupalGet('taxonomy/term/' . $term->id() . '/edit');
     // Check that the administrative theme's CSS appears on the page for editing
     // a taxonomy term.
-    $this->assertSession()->responseContains('seven/css/base/elements.css');
+    $this->assertSession()->responseContains('claro/css/base/elements.css');
   }
 
 }