diff --git a/app/__init__.py b/app/__init__.py
index 93c2b2078..46e1dd8c9 100644
--- a/app/__init__.py
+++ b/app/__init__.py
@@ -24,7 +24,7 @@ from flask_wtf.csrf import CSRFError
 from functools import partial
 
 from notifications_python_client.errors import HTTPError
-from notifications_utils import logging, request_id, formatters
+from notifications_utils import logging, request_helper, formatters
 from notifications_utils.clients.statsd.statsd_client import StatsdClient
 from notifications_utils.recipients import (
     validate_phone_number,
@@ -93,7 +93,7 @@ def create_app(application):
     statsd_client.init_app(application)
     logging.init_app(application, statsd_client)
     init_csrf(application)
-    request_id.init_app(application)
+    request_helper.init_app(application)
 
     service_api_client.init_app(application)
     user_api_client.init_app(application)
diff --git a/app/utils.py b/app/utils.py
index 5b1052567..47fd1f6f8 100644
--- a/app/utils.py
+++ b/app/utils.py
@@ -288,7 +288,8 @@ def get_template(
         return SMSPreviewTemplate(
             template,
             prefix=service['name'],
-            sender=not service['prefix_sms'],
+            show_prefix=service['prefix_sms'],
+            sender=sms_sender,
             show_recipient=show_recipient,
             redact_missing_personalisation=redact_missing_personalisation,
         )
diff --git a/requirements.txt b/requirements.txt
index 74229a332..2f60866a5 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -21,4 +21,4 @@ notifications-python-client==4.6.0
 awscli>=1.11,<1.12
 awscli-cwlogs>=1.4,<1.5
 
-git+https://github.com/alphagov/notifications-utils.git@21.5.0#egg=notifications-utils==21.5.0
+git+https://github.com/alphagov/notifications-utils.git@23.0.0#egg=notifications-utils==23.0.0