diff --git a/src/primaite/game/agent/rewards.py b/src/primaite/game/agent/rewards.py
index 49d56e67..da1331b0 100644
--- a/src/primaite/game/agent/rewards.py
+++ b/src/primaite/game/agent/rewards.py
@@ -26,7 +26,7 @@ the structure:
 ```
 """
 from abc import abstractmethod
-from typing import Dict, List, Tuple, TYPE_CHECKING
+from typing import Dict, List, Tuple, Type, TYPE_CHECKING
 
 from primaite import getLogger
 from primaite.game.agent.utils import access_from_nested_dict, NOT_PRESENT_IN_STATE
@@ -228,7 +228,7 @@ class WebServer404Penalty(AbstractReward):
 class RewardFunction:
     """Manages the reward function for the agent."""
 
-    __rew_class_identifiers: Dict[str, type[AbstractReward]] = {
+    __rew_class_identifiers: Dict[str, Type[AbstractReward]] = {
         "DUMMY": DummyReward,
         "DATABASE_FILE_INTEGRITY": DatabaseFileIntegrity,
         "WEB_SERVER_404_PENALTY": WebServer404Penalty,
diff --git a/src/primaite/game/policy/policy.py b/src/primaite/game/policy/policy.py
index a7052367..249c3b52 100644
--- a/src/primaite/game/policy/policy.py
+++ b/src/primaite/game/policy/policy.py
@@ -1,7 +1,7 @@
 """Base class and common logic for RL policies."""
 from abc import ABC, abstractmethod
 from pathlib import Path
-from typing import Any, Dict, TYPE_CHECKING
+from typing import Any, Dict, Type, TYPE_CHECKING
 
 if TYPE_CHECKING:
     from primaite.game.session import PrimaiteSession, TrainingOptions
@@ -10,7 +10,7 @@ if TYPE_CHECKING:
 class PolicyABC(ABC):
     """Base class for reinforcement learning agents."""
 
-    _registry: Dict[str, type["PolicyABC"]] = {}
+    _registry: Dict[str, Type["PolicyABC"]] = {}
     """
     Registry of policy types, keyed by name.
 
diff --git a/src/primaite/game/policy/sb3.py b/src/primaite/game/policy/sb3.py
index 10f22e05..bb35775a 100644
--- a/src/primaite/game/policy/sb3.py
+++ b/src/primaite/game/policy/sb3.py
@@ -1,6 +1,6 @@
 """Stable baselines 3 policy."""
 from pathlib import Path
-from typing import Literal, Optional, TYPE_CHECKING, Union
+from typing import Literal, Optional, Type, TYPE_CHECKING, Union
 
 from stable_baselines3 import A2C, PPO
 from stable_baselines3.a2c import MlpPolicy as A2C_MLP
@@ -21,7 +21,7 @@ class SB3Policy(PolicyABC, identifier="SB3"):
         """Initialize a stable baselines 3 policy."""
         super().__init__(session=session)
 
-        self._agent_class: type[Union[PPO, A2C]]
+        self._agent_class: Type[Union[PPO, A2C]]
         if algorithm == "PPO":
             self._agent_class = PPO
             policy = PPO_MLP
diff --git a/src/primaite/game/session.py b/src/primaite/game/session.py
index a2e83cbb..88c1e061 100644
--- a/src/primaite/game/session.py
+++ b/src/primaite/game/session.py
@@ -52,7 +52,7 @@ class PrimaiteGymEnv(gymnasium.Env):
         self.session: "PrimaiteSession" = session
         self.agent: ProxyAgent = agents[0]
 
-    def step(self, action: ActType) -> Tuple[ObsType, SupportsFloat, bool, bool, dict[str, Any]]:
+    def step(self, action: ActType) -> Tuple[ObsType, SupportsFloat, bool, bool, Dict[str, Any]]:
         """Perform a step in the environment."""
         # make ProxyAgent store the action chosen my the RL policy
         self.agent.store_action(action)
@@ -70,7 +70,7 @@ class PrimaiteGymEnv(gymnasium.Env):
 
         return next_obs, reward, terminated, truncated, info
 
-    def reset(self, seed: Optional[int] = None) -> tuple[ObsType, dict[str, Any]]:
+    def reset(self, seed: Optional[int] = None) -> Tuple[ObsType, Dict[str, Any]]:
         """Reset the environment."""
         self.session.reset()
         state = self.session.get_sim_state()
diff --git a/tests/e2e_integration_tests/test_primaite_session.py b/tests/e2e_integration_tests/test_primaite_session.py
index c6179e9a..5e1da4ff 100644
--- a/tests/e2e_integration_tests/test_primaite_session.py
+++ b/tests/e2e_integration_tests/test_primaite_session.py
@@ -40,8 +40,6 @@ class TestPrimaiteSession:
         with temp_primaite_session as session:
             session: TempPrimaiteSession
             session.start_session()
-            for i in range(100):
-                print(session.io_manager.generate_session_path())
             # TODO: include checks that the model was trained, e.g. that the loss changed and checkpoints were saved?
 
     @pytest.mark.parametrize("temp_primaite_session", [[EVAL_ONLY_PATH]], indirect=True)