diff --git a/CHANGELOG.md b/CHANGELOG.md
index d30ae5e2..d6932739 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## 3.0.0b9
 - Removed deprecated `PrimaiteSession` class.
+- Upgraded pydantic to version 2.7.0
+- Upgraded Ray to version >= 2.9
+- Added ipywidgets to the dependencies
 
 ## [Unreleased]
 - Made requests fail to reach their target if the node is off
diff --git a/pyproject.toml b/pyproject.toml
index 19b5b7fa..333132bc 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -38,8 +38,9 @@ dependencies = [
     "stable-baselines3[extra]==2.1.0",
     "tensorflow==2.12.0",
     "typer[all]==0.9.0",
-    "pydantic==2.1.1",
-    "ray[rllib] == 2.8.0, < 3"
+    "pydantic==2.7.0",
+    "ray[rllib] >= 2.9, < 3",
+    "ipywidgets"
 ]
 
 [tool.setuptools.dynamic]
diff --git a/src/primaite/game/agent/observations/observations.py b/src/primaite/game/agent/observations/observations.py
index 0d6ff2a3..1ba87a30 100644
--- a/src/primaite/game/agent/observations/observations.py
+++ b/src/primaite/game/agent/observations/observations.py
@@ -1,6 +1,6 @@
 """Manages the observation space for the agent."""
 from abc import ABC, abstractmethod
-from typing import Any, Dict, Iterable, Type
+from typing import Any, Dict, Iterable, Optional, Type, Union
 
 from gymnasium import spaces
 from gymnasium.core import ObsType
@@ -9,7 +9,7 @@ from pydantic import BaseModel, ConfigDict
 from primaite import getLogger
 
 _LOGGER = getLogger(__name__)
-WhereType = Iterable[str | int] | None
+WhereType = Optional[Iterable[Union[str, int]]]
 
 
 class AbstractObservation(ABC):
diff --git a/src/primaite/game/agent/rewards.py b/src/primaite/game/agent/rewards.py
index 726afaa4..0222bfcc 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 Callable, Dict, Iterable, List, Optional, Tuple, Type, TYPE_CHECKING
+from typing import Callable, Dict, Iterable, List, Optional, Tuple, Type, TYPE_CHECKING, Union
 
 from typing_extensions import Never
 
@@ -37,7 +37,7 @@ if TYPE_CHECKING:
     from primaite.game.agent.interface import AgentActionHistoryItem
 
 _LOGGER = getLogger(__name__)
-WhereType = Iterable[str | int] | None
+WhereType = Optional[Iterable[Union[str, int]]]
 
 
 class AbstractReward:
diff --git a/src/primaite/simulator/system/applications/database_client.py b/src/primaite/simulator/system/applications/database_client.py
index d304c200..e21846a3 100644
--- a/src/primaite/simulator/system/applications/database_client.py
+++ b/src/primaite/simulator/system/applications/database_client.py
@@ -236,7 +236,7 @@ class DatabaseClient(Application):
 
         if not connection_id:
             msg = "Cannot run sql query, could not establish connection with the server."
-            self.parent.sys_log(msg)
+            self.parent.sys_log.error(msg)
             return False
 
         uuid = str(uuid4())