diff --git a/app/dao/inbound_numbers_dao.py b/app/dao/inbound_numbers_dao.py
index 0a390c024..bb7d32595 100644
--- a/app/dao/inbound_numbers_dao.py
+++ b/app/dao/inbound_numbers_dao.py
@@ -1,24 +1,30 @@
+from sqlalchemy import select, update
+
 from app import db
 from app.dao.dao_utils import autocommit
 from app.models import InboundNumber
 
 
 def dao_get_inbound_numbers():
-    return InboundNumber.query.order_by(InboundNumber.updated_at).all()
+    stmt = select(InboundNumber).order_by(InboundNumber.updated_at)
+    return db.session.execute(stmt).all()
 
 
 def dao_get_available_inbound_numbers():
-    return InboundNumber.query.filter(
+    stmt = select(InboundNumber).filter(
         InboundNumber.active, InboundNumber.service_id.is_(None)
-    ).all()
+    )
+    return db.session.execute(stmt).all()
 
 
 def dao_get_inbound_number_for_service(service_id):
-    return InboundNumber.query.filter(InboundNumber.service_id == service_id).first()
+    stmt = select(InboundNumber).filter(InboundNumber.service_id == service_id)
+    return db.session.execute(stmt).scalars().first()
 
 
 def dao_get_inbound_number(inbound_number_id):
-    return InboundNumber.query.filter(InboundNumber.id == inbound_number_id).first()
+    stmt = select(InboundNumber).filter(InboundNumber.id == inbound_number_id)
+    return db.session.execute(stmt).scalars().first()
 
 
 @autocommit
@@ -29,9 +35,8 @@ def dao_set_inbound_number_to_service(service_id, inbound_number):
 
 @autocommit
 def dao_set_inbound_number_active_flag(service_id, active):
-    inbound_number = InboundNumber.query.filter(
-        InboundNumber.service_id == service_id
-    ).first()
+    stmt = select(InboundNumber).filter(InboundNumber.service_id == service_id)
+    inbound_number = db.session.execute(stmt).scalars().first()
     inbound_number.active = active
 
     db.session.add(inbound_number)
@@ -39,9 +44,13 @@ def dao_set_inbound_number_active_flag(service_id, active):
 
 @autocommit
 def dao_allocate_number_for_service(service_id, inbound_number_id):
-    updated = InboundNumber.query.filter_by(
-        id=inbound_number_id, active=True, service_id=None
-    ).update({"service_id": service_id})
-    if not updated:
+    stmt = (
+        update(InboundNumber)
+        .filter_by(id=inbound_number_id, active=True, service_id=None)
+        .values({"service_id": service_id})
+    )
+    result = db.session.execute(stmt)
+    db.session.commit()
+    if not result.rowcount == 0:
         raise Exception("Inbound number: {} is not available".format(inbound_number_id))
-    return InboundNumber.query.get(inbound_number_id)
+    return db.session.get(InboundNumber, inbound_number_id)
diff --git a/app/service_invite/rest.py b/app/service_invite/rest.py
index f6d9627da..5728b3ed5 100644
--- a/app/service_invite/rest.py
+++ b/app/service_invite/rest.py
@@ -86,7 +86,7 @@ def _create_service_invite(invited_user, invite_link_host):
     redis_store.set(
         f"email-personalisation-{saved_notification.id}",
         json.dumps(personalisation),
-        ex=2*24*60*60,
+        ex=2 * 24 * 60 * 60,
     )
     send_notification_to_queue(saved_notification, queue=QueueNames.NOTIFY)