diff --git a/ee/spec/features/merge_trains/user_adds_to_merge_train_when_checks_pass_spec.rb b/ee/spec/features/merge_trains/user_adds_to_merge_train_when_checks_pass_spec.rb
index 4aa02113fb35cf0e6bfe1957e1ac0edb362c6a68..bc50f6612dd5e91a389b499b88954436a9a7415c 100644
--- a/ee/spec/features/merge_trains/user_adds_to_merge_train_when_checks_pass_spec.rb
+++ b/ee/spec/features/merge_trains/user_adds_to_merge_train_when_checks_pass_spec.rb
@@ -24,7 +24,8 @@
     sign_in(user)
   end
 
-  it 'shows Start merge train when all merge checks pass button and helper icon' do
+  it 'shows Start merge train when all merge checks pass button and helper icon',
+    quarantine: 'https://gitlab.com/gitlab-org/gitlab/-/issues/506042' do
     visit project_merge_request_path(project, merge_request)
 
     expect(page).to have_button('Set to auto-merge')