try using truststore

tests/__init__.py

@@ -1,14 +1,18 @@
-import uuid
+import truststore
 
-from flask import current_app
-from sqlalchemy import select
+truststore.inject_into_ssl()  # noqa
 
-from app import db
-from app.dao.api_key_dao import save_model_api_key
-from app.dao.services_dao import dao_fetch_service_by_id
-from app.enums import KeyType
-from app.models import ApiKey
-from notifications_python_client.authentication import create_jwt_token
+import uuid  # noqa
+
+from flask import current_app  # noqa
+from sqlalchemy import select  # noqa
+
+from app import db  # noqa
+from app.dao.api_key_dao import save_model_api_key  # noqa
+from app.dao.services_dao import dao_fetch_service_by_id  # noqa
+from app.enums import KeyType  # noqa
+from app.models import ApiKey  # noqa
+from notifications_python_client.authentication import create_jwt_token  # noqa
 
 
 def create_service_authorization_header(service_id, key_type=KeyType.NORMAL):