diff --git a/simulation-system/libs/csle-common/tests/test_elk_controller.py b/simulation-system/libs/csle-common/tests/test_elk_controller.py
index 3a95e01bf..13627db80 100644
--- a/simulation-system/libs/csle-common/tests/test_elk_controller.py
+++ b/simulation-system/libs/csle-common/tests/test_elk_controller.py
@@ -504,7 +504,7 @@ def test_get_elk_managers_infos(
         emulation_env_config.elk_config = elk_config
         emulation_env_config.elk_config.container.docker_gw_bridge_ip = "172.17.0.1"
         emulation_env_config.elk_config.elk_manager_port = 5601
-        emulation_env_config.execution_id = "test_execution_id"
+        emulation_env_config.execution_id = 1
         emulation_env_config.name = "test_emulation"
         logger = MagicMock(spec=logging.Logger)
         active_ips = ["172.17.0.1"]
@@ -520,5 +520,5 @@ def test_get_elk_managers_infos(
         )
         assert result.ips == ["172.17.0.1"]
         assert result.ports == [5601]
-        assert result.execution_id == "test_execution_id"
+        assert result.execution_id == 1
         assert result.emulation_name == "test_emulation"
diff --git a/simulation-system/libs/gym-csle-apt-game/tests/test_apt_game_env.py b/simulation-system/libs/gym-csle-apt-game/tests/test_apt_game_env.py
index 15d1b4c6c..249e31519 100644
--- a/simulation-system/libs/gym-csle-apt-game/tests/test_apt_game_env.py
+++ b/simulation-system/libs/gym-csle-apt-game/tests/test_apt_game_env.py
@@ -133,7 +133,7 @@ def test_reset(self) -> None:
         self.env.trace.attacker_observations = ["obs1", "obs2"]
         self.env.trace.defender_observations = ["obs1", "obs2"]
         initial_trace_count = len(self.env.traces)
-        AptGameState.reset = lambda self: None
+        AptGameState.reset = lambda self: None # type: ignore
         initial_obs, info = self.env.reset(seed=10, soft=False, options=None)
         assert len(self.env.traces) == initial_trace_count + 1
         assert isinstance(self.env.trace, SimulationTrace)
diff --git a/simulation-system/libs/gym-csle-apt-game/tests/test_apt_game_util.py b/simulation-system/libs/gym-csle-apt-game/tests/test_apt_game_util.py
index 74952f386..2b6c598e1 100644
--- a/simulation-system/libs/gym-csle-apt-game/tests/test_apt_game_util.py
+++ b/simulation-system/libs/gym-csle-apt-game/tests/test_apt_game_util.py
@@ -223,7 +223,7 @@ def test_expected_cost(self) -> None:
 
         :return: None
         """
-        C = [[10, 20, 30], [15, 25, 35]]
+        C = [[10.0, 20.0, 30.0], [15.0, 25.0, 35.0]]
         b = [0.2, 0.5, 0.3]
         S = [0, 1, 2]
         a1 = 0