diff --git a/app/dao/service_sms_sender_dao.py b/app/dao/service_sms_sender_dao.py
index 9224cf09d..c23bd5a2e 100644
--- a/app/dao/service_sms_sender_dao.py
+++ b/app/dao/service_sms_sender_dao.py
@@ -1,4 +1,4 @@
-from sqlalchemy import desc
+from sqlalchemy import desc, select
 
 from app import db
 from app.dao.dao_utils import autocommit
@@ -17,17 +17,27 @@ def insert_service_sms_sender(service, sms_sender):
 
 
 def dao_get_service_sms_senders_by_id(service_id, service_sms_sender_id):
-    return ServiceSmsSender.query.filter_by(
+    # return ServiceSmsSender.query.filter_by(
+    #     id=service_sms_sender_id, service_id=service_id, archived=False
+    # ).one()
+    stmt = select(ServiceSmsSender).filter_by(
         id=service_sms_sender_id, service_id=service_id, archived=False
-    ).one()
+    )
+    return db.session.execute(stmt).scalars().one()
 
 
 def dao_get_sms_senders_by_service_id(service_id):
-    return (
-        ServiceSmsSender.query.filter_by(service_id=service_id, archived=False)
+    # return (
+    #     ServiceSmsSender.query.filter_by(service_id=service_id, archived=False)
+    #     .order_by(desc(ServiceSmsSender.is_default))
+    #     .all()
+    # )
+    stmt = (
+        select(ServiceSmsSender)
+        .filter_by(ervice_id=service_id, archived=False)
         .order_by(desc(ServiceSmsSender.is_default))
-        .all()
     )
+    return db.session.execute(stmt).scalars().all()
 
 
 @autocommit
diff --git a/app/dao/service_user_dao.py b/app/dao/service_user_dao.py
index 0b991a4fc..b02005a3f 100644
--- a/app/dao/service_user_dao.py
+++ b/app/dao/service_user_dao.py
@@ -1,3 +1,5 @@
+from sqlalchemy import select
+
 from app import db
 from app.dao.dao_utils import autocommit
 from app.models import ServiceUser, User
@@ -7,19 +9,28 @@ def dao_get_service_user(user_id, service_id):
     # TODO: This has been changed to account for the test case failure
     # that used this method but have any service user to return. Somehow, this
     # started to throw an error with one() method in sqlalchemy 2.0 unlike 1.4
-    return ServiceUser.query.filter_by(
-        user_id=user_id, service_id=service_id
-    ).one_or_none()
+    # return ServiceUser.query.filter_by(
+    #     user_id=user_id, service_id=service_id
+    # ).one_or_none()
+    stmt = select(ServiceUser).filter_by(user_id=user_id, service_id=service_id)
+    return db.session.execute(stmt).scalars().one_or_none()
 
 
 def dao_get_active_service_users(service_id):
-    query = (
-        db.session.query(ServiceUser)
+    # query = (
+    #     db.session.query(ServiceUser)
+    #     .join(User, User.id == ServiceUser.user_id)
+    #     .filter(User.state == "active", ServiceUser.service_id == service_id)
+    # )
+
+    # return query.all()
+
+    stmt = (
+        select(ServiceUser)
         .join(User, User.id == ServiceUser.user_id)
         .filter(User.state == "active", ServiceUser.service_id == service_id)
     )
-
-    return query.all()
+    return db.session.execute(stmt).scalars().all()
 
 
 def dao_get_service_users_by_user_id(user_id):