diff --git a/ee/spec/lib/gitlab/ci/templates/dast_gitlab_ci_yaml_spec.rb b/ee/spec/lib/gitlab/ci/templates/dast_gitlab_ci_yaml_spec.rb
index de4bca0b56115f2f32fa801c91cb235f3936b0e9..6a065608d56fee1729a0b8372e316fc4693ba2d4 100644
--- a/ee/spec/lib/gitlab/ci/templates/dast_gitlab_ci_yaml_spec.rb
+++ b/ee/spec/lib/gitlab/ci/templates/dast_gitlab_ci_yaml_spec.rb
@@ -6,7 +6,7 @@
   subject(:template) { Gitlab::Template::GitlabCiYmlTemplate.find('DAST') }
 
   describe 'the created pipeline' do
-    let(:default_branch) { 'master' }
+    let(:default_branch) { project.default_branch_or_main }
     let(:pipeline_branch) { default_branch }
     let(:project) { create(:project, :custom_repo, files: { 'README.txt' => '' }) }
     let(:user) { project.owner }
@@ -107,7 +107,7 @@
             let(:pipeline_branch) { 'patch-1' }
 
             before do
-              project.repository.create_branch(pipeline_branch)
+              project.repository.create_branch(pipeline_branch, default_branch)
             end
 
             it 'includes dast job' do
@@ -133,7 +133,7 @@
             let(:pipeline_branch) { 'patch-1' }
 
             before do
-              project.repository.create_branch(pipeline_branch)
+              project.repository.create_branch(pipeline_branch, default_branch)
             end
 
             it 'includes no jobs' do
diff --git a/ee/spec/lib/gitlab/ci/templates/dast_latest_gitlab_ci_yaml_spec.rb b/ee/spec/lib/gitlab/ci/templates/dast_latest_gitlab_ci_yaml_spec.rb
index 3984905d9ae9c046986fca7d8af061d2c8bdff08..64110bf92d9cd97c41a364c5eaef5141fba2a002 100644
--- a/ee/spec/lib/gitlab/ci/templates/dast_latest_gitlab_ci_yaml_spec.rb
+++ b/ee/spec/lib/gitlab/ci/templates/dast_latest_gitlab_ci_yaml_spec.rb
@@ -18,7 +18,7 @@
   subject(:template) { Gitlab::Template::GitlabCiYmlTemplate.find('DAST.latest') }
 
   describe 'the created pipeline' do
-    let(:default_branch) { 'master' }
+    let(:default_branch) { project.default_branch_or_main }
     let(:pipeline_branch) { default_branch }
     let(:project) { create(:project, :custom_repo, files: { 'README.txt' => '' }) }
     let(:user) { project.owner }
@@ -143,7 +143,7 @@
                 let(:pipeline_branch) { 'patch-1' }
 
                 before do
-                  project.repository.create_branch(pipeline_branch)
+                  project.repository.create_branch(pipeline_branch, default_branch)
                 end
 
                 it 'includes dast job' do
@@ -167,7 +167,7 @@
                 let(:pipeline_branch) { 'patch-1' }
 
                 before do
-                  project.repository.create_branch(pipeline_branch)
+                  project.repository.create_branch(pipeline_branch, default_branch)
                 end
 
                 include_examples 'includes no jobs'
diff --git a/spec/lib/gitlab/ci/templates/AWS/deploy_ecs_gitlab_ci_yaml_spec.rb b/spec/lib/gitlab/ci/templates/AWS/deploy_ecs_gitlab_ci_yaml_spec.rb
index 653b3be0b2ab06c7c9146d1d1d630db2a41c3c22..e8aeb93a2ba3e082336af260b525207745feabc7 100644
--- a/spec/lib/gitlab/ci/templates/AWS/deploy_ecs_gitlab_ci_yaml_spec.rb
+++ b/spec/lib/gitlab/ci/templates/AWS/deploy_ecs_gitlab_ci_yaml_spec.rb
@@ -6,7 +6,7 @@
   subject(:template) { Gitlab::Template::GitlabCiYmlTemplate.find('AWS/Deploy-ECS') }
 
   describe 'the created pipeline' do
-    let(:default_branch) { 'master' }
+    let(:default_branch) { project.default_branch_or_main }
     let(:pipeline_branch) { default_branch }
     let(:project) { create(:project, :auto_devops, :custom_repo, files: { 'README.md' => '' }) }
     let(:user) { project.owner }
@@ -38,7 +38,7 @@
       let(:pipeline_branch) { 'test_branch' }
 
       before do
-        project.repository.create_branch(pipeline_branch)
+        project.repository.create_branch(pipeline_branch, default_branch)
       end
 
       it_behaves_like 'no pipeline yaml error'
diff --git a/spec/lib/gitlab/ci/templates/managed_cluster_applications_gitlab_ci_yaml_spec.rb b/spec/lib/gitlab/ci/templates/managed_cluster_applications_gitlab_ci_yaml_spec.rb
index 0e458e01a2c3c36ad2ede26bdcfad9a195e4b43d..151880e27a39aeba4b82203c6308bf8a07dd7e9a 100644
--- a/spec/lib/gitlab/ci/templates/managed_cluster_applications_gitlab_ci_yaml_spec.rb
+++ b/spec/lib/gitlab/ci/templates/managed_cluster_applications_gitlab_ci_yaml_spec.rb
@@ -12,7 +12,8 @@
     let(:service) { Ci::CreatePipelineService.new(project, user, ref: pipeline_branch ) }
     let(:pipeline) { service.execute!(:push) }
     let(:build_names) { pipeline.builds.pluck(:name) }
-    let(:pipeline_branch) { 'master' }
+    let(:default_branch) { project.default_branch_or_main }
+    let(:pipeline_branch) { default_branch }
 
     before do
       stub_ci_pipeline_yaml_file(template.content)
@@ -28,7 +29,7 @@
       let(:pipeline_branch) { 'a_branch' }
 
       before do
-        project.repository.create_branch(pipeline_branch)
+        project.repository.create_branch(pipeline_branch, default_branch)
       end
 
       it 'has no jobs' do
diff --git a/spec/lib/gitlab/ci/templates/terraform_latest_gitlab_ci_yaml_spec.rb b/spec/lib/gitlab/ci/templates/terraform_latest_gitlab_ci_yaml_spec.rb
index 4377f155d345ced32f523313aa166cba57ddfee5..5ab3035486f68285e6f87091efb73f8b81bfa45a 100644
--- a/spec/lib/gitlab/ci/templates/terraform_latest_gitlab_ci_yaml_spec.rb
+++ b/spec/lib/gitlab/ci/templates/terraform_latest_gitlab_ci_yaml_spec.rb
@@ -10,7 +10,7 @@
   subject(:template) { Gitlab::Template::GitlabCiYmlTemplate.find('Terraform.latest') }
 
   describe 'the created pipeline' do
-    let(:default_branch) { 'master' }
+    let(:default_branch) { project.default_branch_or_main }
     let(:pipeline_branch) { default_branch }
     let(:project) { create(:project, :custom_repo, files: { 'README.md' => '' }) }
     let(:user) { project.owner }
@@ -34,7 +34,7 @@
       let(:pipeline_branch) { 'patch-1' }
 
       before do
-        project.repository.create_branch(pipeline_branch)
+        project.repository.create_branch(pipeline_branch, default_branch)
       end
 
       it 'does not creates a deploy and a test job' do