diff --git a/requirements.txt b/requirements.txt
index 22dd3c13e..5637048f6 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -33,4 +33,4 @@ 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@13.7.0#egg=notifications-utils==13.7.0
+git+https://github.com/alphagov/notifications-utils.git@13.8.0#egg=notifications-utils==13.8.0
diff --git a/tests/app/main/views/test_templates.py b/tests/app/main/views/test_templates.py
index 29b9173ee..ab336482f 100644
--- a/tests/app/main/views/test_templates.py
+++ b/tests/app/main/views/test_templates.py
@@ -32,13 +32,14 @@ def test_should_show_page_for_one_template(
     mock_get_service_template.assert_called_with(service_one['id'], template_id)
 
 
-def test_should_show_sms_template_without_downgrading_unicode_characters(
+def test_should_show_sms_template_with_downgraded_unicode_characters(
     logged_in_client,
     mocker,
     service_one,
     fake_uuid,
 ):
-    msg = 'here:\tare some “fancy quotes” and non\u200Bbreaking\u200Bspaces'
+    msg = 'here:\tare some “fancy quotes” and zero\u200Bwidth\u200Bspaces'
+    rendered_msg = 'here: are some "fancy quotes" and zerowidthspaces'
 
     mocker.patch(
         'app.service_api_client.get_service_template',
@@ -52,7 +53,7 @@ def test_should_show_sms_template_without_downgrading_unicode_characters(
         template_id=template_id))
 
     assert response.status_code == 200
-    assert msg in response.get_data(as_text=True)
+    assert rendered_msg in response.get_data(as_text=True)
 
 
 def test_should_show_page_template_with_priority_select_if_platform_admin(