diff --git a/app/__init__.py b/app/__init__.py
index c5a63bcf1..09e0d195d 100644
--- a/app/__init__.py
+++ b/app/__init__.py
@@ -7,7 +7,6 @@ from time import monotonic
 
 from celery import current_task
 from flask import (
-    _request_ctx_stack,
     current_app,
     g,
     has_request_context,
@@ -69,8 +68,8 @@ metrics = GDSMetrics()
 
 notification_provider_clients = NotificationProviderClients()
 
-api_user = LocalProxy(lambda: _request_ctx_stack.top.api_user)
-authenticated_service = LocalProxy(lambda: _request_ctx_stack.top.authenticated_service)
+api_user = LocalProxy(lambda: g.api_user)
+authenticated_service = LocalProxy(lambda: g.authenticated_service)
 
 CONCURRENT_REQUESTS = Gauge(
     'concurrent_web_request_count',
diff --git a/app/authentication/auth.py b/app/authentication/auth.py
index b215d6b90..9db851e47 100644
--- a/app/authentication/auth.py
+++ b/app/authentication/auth.py
@@ -1,6 +1,6 @@
 import uuid
 
-from flask import _request_ctx_stack, current_app, g, request
+from flask import current_app, g, request
 from gds_metrics import Histogram
 from notifications_python_client.authentication import (
     decode_jwt_token,
@@ -140,8 +140,8 @@ def requires_auth():
             raise AuthError("Invalid token: API key revoked", 403, service_id=service.id, api_key_id=api_key.id)
 
         g.service_id = service.id
-        _request_ctx_stack.top.authenticated_service = service
-        _request_ctx_stack.top.api_user = api_key
+        g.api_user = api_key
+        g.authenticated_service = service
 
         current_app.logger.info('API authorised for service {} with api key {}, using issuer {} for URL: {}'.format(
             service.id,
diff --git a/requirements-app.txt b/requirements-app.txt
index ab701b28d..e0aa52214 100644
--- a/requirements-app.txt
+++ b/requirements-app.txt
@@ -34,7 +34,7 @@ notifications-python-client==6.0.2
 # PaaS
 awscli-cwlogs==1.4.6
 
-git+https://github.com/alphagov/notifications-utils.git@44.1.0#egg=notifications-utils==44.1.0
+git+https://github.com/alphagov/notifications-utils.git@44.4.2#egg=notifications-utils==44.4.2
 
 # gds-metrics requires prometheseus 0.2.0, override that requirement as 0.7.1 brings significant performance gains
 prometheus-client==0.10.1
diff --git a/requirements.txt b/requirements.txt
index 0b5a868d6..aaaac3d43 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -36,28 +36,28 @@ notifications-python-client==6.0.2
 # PaaS
 awscli-cwlogs==1.4.6
 
-git+https://github.com/alphagov/notifications-utils.git@44.1.0#egg=notifications-utils==44.1.0
+git+https://github.com/alphagov/notifications-utils.git@44.4.2#egg=notifications-utils==44.4.2
 
 # gds-metrics requires prometheseus 0.2.0, override that requirement as 0.7.1 brings significant performance gains
 prometheus-client==0.10.1
 gds-metrics==0.2.4
 
 ## The following requirements were added by pip freeze:
-alembic==1.6.2
+alembic==1.6.5
 amqp==1.4.9
 anyjson==0.3.3
 attrs==21.2.0
-awscli==1.19.69
+awscli==1.19.106
 bcrypt==3.2.0
 billiard==3.3.0.23
 bleach==3.3.0
 blinker==1.4
 boto==2.49.0
-boto3==1.17.69
-botocore==1.20.69
-certifi==2020.12.5
+boto3==1.17.106
+botocore==1.20.106
+certifi==2021.5.30
 chardet==4.0.0
-click==7.1.2
+click==8.0.1
 colorama==0.4.3
 dnspython==1.16.0
 docutils==0.15.2
@@ -66,20 +66,20 @@ geojson==2.5.0
 govuk-bank-holidays==0.8
 greenlet==1.1.0
 idna==2.10
-Jinja2==2.11.3
+Jinja2==3.0.1
 jmespath==0.10.0
 kombu==3.0.37
 Mako==1.1.4
-MarkupSafe==1.1.1
+MarkupSafe==2.0.1
 mistune==0.8.4
 orderedset==2.0.3
-packaging==20.9
-phonenumbers==8.12.22
+packaging==21.0
+phonenumbers==8.12.26
 pyasn1==0.4.8
 pycparser==2.20
 pyparsing==2.4.7
 PyPDF2==1.26.0
-pyrsistent==0.17.3
+pyrsistent==0.18.0
 python-dateutil==2.8.1
 python-editor==1.0.4
 python-json-logger==2.0.1
@@ -94,6 +94,6 @@ six==1.16.0
 smartypants==2.0.1
 soupsieve==2.2.1
 statsd==3.3.0
-urllib3==1.26.4
+urllib3==1.26.6
 webencodings==0.5.1
-Werkzeug==1.0.1
+Werkzeug==2.0.1
diff --git a/requirements_for_test.txt b/requirements_for_test.txt
index c9862ea0a..36464b7b7 100644
--- a/requirements_for_test.txt
+++ b/requirements_for_test.txt
@@ -2,7 +2,7 @@
 flake8==3.8.4
 flake8-bugbear==20.11.1
 isort==5.7.0
-moto==1.3.16
+moto==2.0.11
 pytest==6.1.2
 pytest-env==0.6.2
 pytest-mock==3.3.1
diff --git a/tests/app/celery/test_scheduled_tasks.py b/tests/app/celery/test_scheduled_tasks.py
index 1d55d9e62..d72e6d544 100644
--- a/tests/app/celery/test_scheduled_tasks.py
+++ b/tests/app/celery/test_scheduled_tasks.py
@@ -1,10 +1,10 @@
 from collections import namedtuple
 from datetime import datetime, timedelta
+from unittest import mock
 from unittest.mock import call
 
 import pytest
 from freezegun import freeze_time
-from mock import mock
 
 from app.celery import scheduled_tasks
 from app.celery.scheduled_tasks import (
diff --git a/tests/app/dao/test_fact_notification_status_dao.py b/tests/app/dao/test_fact_notification_status_dao.py
index f807541a0..6fb2ae5e8 100644
--- a/tests/app/dao/test_fact_notification_status_dao.py
+++ b/tests/app/dao/test_fact_notification_status_dao.py
@@ -1,7 +1,7 @@
 from datetime import date, datetime, time, timedelta
+from unittest import mock
 from uuid import UUID
 
-import mock
 import pytest
 from freezegun import freeze_time
 
diff --git a/tests/app/user/test_rest.py b/tests/app/user/test_rest.py
index 290a55782..96f6401a8 100644
--- a/tests/app/user/test_rest.py
+++ b/tests/app/user/test_rest.py
@@ -1,8 +1,8 @@
 import json
 import uuid
 from datetime import datetime
+from unittest import mock
 
-import mock
 import pytest
 from flask import current_app, url_for
 from freezegun import freeze_time
diff --git a/tests/app/v2/broadcast/test_post_broadcast.py b/tests/app/v2/broadcast/test_post_broadcast.py
index 9edd65e69..fc824f946 100644
--- a/tests/app/v2/broadcast/test_post_broadcast.py
+++ b/tests/app/v2/broadcast/test_post_broadcast.py
@@ -104,8 +104,8 @@ def test_valid_post_cap_xml_broadcast_returns_201(
     assert response_json['service_id'] == str(sample_broadcast_service.id)
     assert len(response_json['simple_polygons']) == 1
     assert len(response_json['simple_polygons'][0]) == 23
-    assert response_json['simple_polygons'][0][0] == [53.10561946699971, 0.2441253049430708]
-    assert response_json['simple_polygons'][0][-1] == [53.10561946699971, 0.2441253049430708]
+    assert response_json['simple_polygons'][0][0] == [53.10562, 0.244127]
+    assert response_json['simple_polygons'][0][-1] == [53.10562, 0.244127]
     assert response_json['starts_at'] is None
     assert response_json['status'] == 'pending-approval'
     assert response_json['template_id'] is None