diff --git a/requirements.txt b/requirements.txt
index 783686de9..73cf5b94b 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -29,6 +29,6 @@ notifications-python-client>=3.1,<3.2
 awscli>=1.11,<1.12
 awscli-cwlogs>=1.4,<1.5
 
-git+https://github.com/alphagov/notifications-utils.git@14.0.1#egg=notifications-utils==14.0.1
+git+https://github.com/alphagov/notifications-utils.git@13.9.6#egg=notifications-utils==13.9.6
 
 git+https://github.com/alphagov/boto.git@2.43.0-patch3#egg=boto==2.43.0-patch3
diff --git a/tests/app/notifications/rest/test_send_notification.py b/tests/app/notifications/rest/test_send_notification.py
index 7c90f0c99..90e2c64e7 100644
--- a/tests/app/notifications/rest/test_send_notification.py
+++ b/tests/app/notifications/rest/test_send_notification.py
@@ -133,42 +133,6 @@ def test_send_notification_with_placeholders_replaced(notify_api, sample_email_t
             assert response_data['subject'] == 'Jo'
 
 
-def test_send_notification_with_placeholders_replaced_with_list(
-    client,
-    sample_email_template_with_placeholders,
-    mocker
-):
-    mocked = mocker.patch('app.celery.provider_tasks.deliver_email.apply_async')
-
-    response = client.post(
-        path='/notifications/email',
-        data=json.dumps(
-            {
-                'to': 'ok@ok.com',
-                'template': str(sample_email_template_with_placeholders.id),
-                'personalisation': {
-                    'name': ['Jo', 'John', 'Josephine']
-                }
-            }
-        ),
-        headers=[
-            ('Content-Type', 'application/json'),
-            create_authorization_header(service_id=sample_email_template_with_placeholders.service.id)
-        ]
-    )
-
-    response_data = json.loads(response.data)['data']
-    assert response.status_code == 201
-    assert response_data['body'] == (
-        'Hello \n\n'
-        '* Jo\n'
-        '* John\n'
-        '* Josephine\n'
-        'This is an email from GOV.\u200BUK'
-    )
-    assert response_data['subject'] == 'Jo, John and Josephine'
-
-
 def test_should_not_send_notification_for_archived_template(notify_api, sample_template):
     with notify_api.test_request_context():
         with notify_api.test_client() as client: