diff --git a/feems/pyproject.toml b/feems/pyproject.toml
index b20069e..af37cdd 100644
--- a/feems/pyproject.toml
+++ b/feems/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "feems"
-version = "0.10.5"
+version = "0.10.6"
 description = ""
 authors = ["Kevin Koosup Yum <kevinkoosup.yum@sintef.no>"]
 readme = "readme.md"
diff --git a/feems/tests/test_system.py b/feems/tests/test_system.py
index f5ec93c..fd2a880 100644
--- a/feems/tests/test_system.py
+++ b/feems/tests/test_system.py
@@ -1,7 +1,7 @@
 import copy
 import pprint
 import random
-from typing import List, Dict
+from typing import List, Dict, Tuple
 from unittest import TestCase
 
 from feems.components_model.component_electric import (
@@ -366,7 +366,7 @@ def get_propulsion_drives(
     @staticmethod
     def get_components_numbers_electric_system(
         system: ElectricPowerSystem,
-    ) -> (int, int, int, int, int):
+    ) -> Tuple[int, int, int, int, int]:
         no_power_sources = system.no_power_sources
         no_propulsion_drive = system.no_propulsion_units
         no_other_load = system.no_other_load