diff --git a/force_bdss/api.py b/force_bdss/api.py
index 939e8cf49e1d2d90bcb3aa451111a80cc2606399..c1022dc0c9b910d9ccf1d9538134834cc3f669fe 100644
--- a/force_bdss/api.py
+++ b/force_bdss/api.py
@@ -6,14 +6,16 @@ from .data_sources.data_source_result import DataSourceResult  # noqa
 from .data_sources.data_source_parameters import DataSourceParameters  # noqa
 from .data_sources.base_data_source import BaseDataSource  # noqa
 from .data_sources.base_data_source_bundle import BaseDataSourceBundle  # noqa
+from .data_sources.i_data_source_bundle import IDataSourceBundle  # noqa
 
 from .kpi.base_kpi_calculator import BaseKPICalculator  # noqa
 from .kpi.kpi_calculator_result import KPICalculatorResult  # noqa
 from .kpi.base_kpi_calculator_model import BaseKPICalculatorModel  # noqa
 from .kpi.base_kpi_calculator_bundle import BaseKPICalculatorBundle  # noqa
+from .kpi.i_kpi_calculator_bundle import IKPICalculatorBundle  # noqa
 
 from .mco.base_mco_model import BaseMCOModel  # noqa
 from .mco.base_mco_communicator import BaseMCOCommunicator  # noqa
 from .mco.base_multi_criteria_optimizer import BaseMultiCriteriaOptimizer  # noqa
 from .mco.base_multi_criteria_optimizer_bundle import BaseMultiCriteriaOptimizerBundle  # noqa
-
+from .mco.i_multi_criteria_optimizer_bundle import IMultiCriteriaOptimizerBundle  # noqa