diff --git a/spec/finders/autocomplete/users_finder_spec.rb b/spec/finders/autocomplete/users_finder_spec.rb
index 28bd7e12916d5368adf388e8f913503c30bee897..df7a14d440e439bd9698aa8e3e25335f123831e2 100644
--- a/spec/finders/autocomplete/users_finder_spec.rb
+++ b/spec/finders/autocomplete/users_finder_spec.rb
@@ -3,6 +3,9 @@
 require 'spec_helper'
 
 RSpec.describe Autocomplete::UsersFinder do
+  # TODO update when multiple owners are possible in projects
+  # https://gitlab.com/gitlab-org/gitlab/-/issues/21432
+
   describe '#execute' do
     let!(:user1) { create(:user, username: 'johndoe') }
     let!(:user2) { create(:user, :blocked, username: 'notsorandom') }
@@ -25,19 +28,19 @@
     context 'when project passed' do
       let(:project) { create(:project) }
 
-      it { is_expected.to match_array([project.owner]) }
+      it { is_expected.to match_array([project.first_owner]) }
 
       context 'when author_id passed' do
         context 'and author is active' do
           let(:params) { { author_id: user1.id } }
 
-          it { is_expected.to match_array([project.owner, user1]) }
+          it { is_expected.to match_array([project.first_owner, user1]) }
         end
 
         context 'and author is blocked' do
           let(:params) { { author_id: user2.id } }
 
-          it { is_expected.to match_array([project.owner]) }
+          it { is_expected.to match_array([project.first_owner]) }
         end
       end
     end
diff --git a/spec/finders/ci/daily_build_group_report_results_finder_spec.rb b/spec/finders/ci/daily_build_group_report_results_finder_spec.rb
index cf15a00323bb59e90dd4f1f16a950e0a432d939e..5352cfe5238b7dd24dbaac19c0fd47eef6b969c1 100644
--- a/spec/finders/ci/daily_build_group_report_results_finder_spec.rb
+++ b/spec/finders/ci/daily_build_group_report_results_finder_spec.rb
@@ -6,7 +6,7 @@
   describe '#execute' do
     let_it_be(:project) { create(:project, :private) }
     let(:user_without_permission) { create(:user) }
-    let_it_be(:user_with_permission) { project.owner }
+    let_it_be(:user_with_permission) { project.first_owner }
     let_it_be(:ref_path) { 'refs/heads/master' }
     let(:limit) { nil }
     let_it_be(:default_branch) { false }
diff --git a/spec/finders/merge_request_target_project_finder_spec.rb b/spec/finders/merge_request_target_project_finder_spec.rb
index 08fbfd7229aec3ff9bd9278d904aa36f263bc99e..bf735152d99cabb72d907a8b3099e549cef2a7e3 100644
--- a/spec/finders/merge_request_target_project_finder_spec.rb
+++ b/spec/finders/merge_request_target_project_finder_spec.rb
@@ -65,8 +65,8 @@
 
   context 'private projects' do
     let(:base_project) { create(:project, :private, path: 'base') }
-    let(:forked_project) { fork_project(base_project, base_project.owner) }
-    let(:other_fork) { fork_project(base_project, base_project.owner) }
+    let(:forked_project) { fork_project(base_project, base_project.first_owner) }
+    let(:other_fork) { fork_project(base_project, base_project.first_owner) }
 
     context 'when the user is a member of all projects' do
       before do