diff --git a/app/llm/external/__init__.py b/app/llm/external/__init__.py
index c23c66d5..dfa18f57 100644
--- a/app/llm/external/__init__.py
+++ b/app/llm/external/__init__.py
@@ -1,3 +1,5 @@
+from typing import Union
+
 from ...llm.external.model import LanguageModel
 from ...llm.external.openai_completion import (
     DirectOpenAICompletionModel,
@@ -10,12 +12,12 @@
 )
 from ...llm.external.ollama import OllamaModel
 
-type AnyLLM = (
-    DirectOpenAICompletionModel
-    | AzureOpenAICompletionModel
-    | DirectOpenAIChatModel
-    | AzureOpenAIChatModel
-    | DirectOpenAIEmbeddingModel
-    | AzureOpenAIEmbeddingModel
-    | OllamaModel
-)
+AnyLLM = Union[
+    DirectOpenAICompletionModel,
+    AzureOpenAICompletionModel,
+    DirectOpenAIChatModel,
+    AzureOpenAIChatModel,
+    DirectOpenAIEmbeddingModel,
+    AzureOpenAIEmbeddingModel,
+    OllamaModel,
+]
diff --git a/app/llm/external/model.py b/app/llm/external/model.py
index 1025fcf1..92304f86 100644
--- a/app/llm/external/model.py
+++ b/app/llm/external/model.py
@@ -3,7 +3,6 @@
 from langchain_core.tools import BaseTool
 from openai.types.chat import ChatCompletionMessage
 from pydantic import BaseModel
-from pydantic.v1 import BaseModel as LegacyBaseModel
 
 from ...common.pyris_message import PyrisMessage
 from ...llm import CompletionArguments
@@ -53,9 +52,7 @@ def chat(
     @abstractmethod
     def bind_tools(
         self,
-        tools: Sequence[
-            Union[Dict[str, Any], Type[LegacyBaseModel], Callable, BaseTool]
-        ],
+        tools: Sequence[Union[Dict[str, Any], Type[BaseModel], Callable, BaseTool]],
     ):
         """Bind tools"""
         raise NotImplementedError(
diff --git a/app/llm/external/ollama.py b/app/llm/external/ollama.py
index 8739262a..305e31c1 100644
--- a/app/llm/external/ollama.py
+++ b/app/llm/external/ollama.py
@@ -6,10 +6,9 @@
 from langchain_core.messages import BaseMessage
 from langchain_core.runnables import Runnable
 from langchain_core.tools import BaseTool
-from pydantic import Field
+from pydantic import Field, BaseModel
 
 from ollama import Client, Message
-from pydantic.v1 import BaseModel as LegacyBaseModel
 
 from ...common.message_converters import map_role_to_str, map_str_to_role
 from ...common.pyris_message import PyrisMessage
@@ -155,9 +154,7 @@ def embed(self, text: str) -> list[float]:
     # TODO: Implement tool binding support for Ollama models
     def bind_tools(
         self,
-        tools: Sequence[
-            Union[Dict[str, Any], Type[LegacyBaseModel], Callable, BaseTool]
-        ],
+        tools: Sequence[Union[Dict[str, Any], Type[BaseModel], Callable, BaseTool]],
     ) -> Runnable[LanguageModelInput, BaseMessage]:
         raise NotImplementedError(
             f"The LLM {self.__str__()} does not support binding tools"
diff --git a/app/llm/external/openai_chat.py b/app/llm/external/openai_chat.py
index e7197314..8608bf1a 100644
--- a/app/llm/external/openai_chat.py
+++ b/app/llm/external/openai_chat.py
@@ -17,8 +17,7 @@
 from openai.types import CompletionUsage
 from openai.types.chat import ChatCompletionMessage, ChatCompletionMessageParam
 from openai.types.shared_params import ResponseFormatJSONObject
-from pydantic import Field
-from pydantic.v1 import BaseModel as LegacyBaseModel
+from pydantic import Field, BaseModel
 
 from app.domain.data.text_message_content_dto import TextMessageContentDTO
 from ...common.message_converters import map_role_to_str, map_str_to_role
@@ -202,7 +201,7 @@ class OpenAIChatModel(ChatModel):
     model: str
     api_key: str
     tools: Optional[
-        Sequence[Union[Dict[str, Any], Type[LegacyBaseModel], Callable, BaseTool]]
+        Sequence[Union[Dict[str, Any], Type[BaseModel], Callable, BaseTool]]
     ] = Field(default_factory=list, alias="tools")
 
     def chat(
@@ -258,9 +257,7 @@ def chat(
 
     def bind_tools(
         self,
-        tools: Sequence[
-            Union[Dict[str, Any], Type[LegacyBaseModel], Callable, BaseTool]
-        ],
+        tools: Sequence[Union[Dict[str, Any], Type[BaseModel], Callable, BaseTool]],
     ):
         self.tools = [convert_to_openai_tool(tool) for tool in tools]
 
diff --git a/app/llm/langchain/iris_langchain_chat_model.py b/app/llm/langchain/iris_langchain_chat_model.py
index 58e06165..e7c0011c 100644
--- a/app/llm/langchain/iris_langchain_chat_model.py
+++ b/app/llm/langchain/iris_langchain_chat_model.py
@@ -1,4 +1,5 @@
 import logging
+from logging import Logger
 from typing import List, Optional, Any, Sequence, Union, Dict, Type, Callable
 
 from langchain_core.callbacks import CallbackManagerForLLMRun
@@ -28,7 +29,7 @@ class IrisLangchainChatModel(BaseChatModel):
     request_handler: RequestHandler
     completion_args: CompletionArguments
     tokens: TokenUsageDTO = None
-    logger = logging.getLogger(__name__)
+    logger: Logger = logging.getLogger(__name__)
 
     def __init__(
         self,
diff --git a/app/llm/llm_manager.py b/app/llm/llm_manager.py
index bd62b8ba..161ad947 100644
--- a/app/llm/llm_manager.py
+++ b/app/llm/llm_manager.py
@@ -1,6 +1,7 @@
 import os
+from typing import Annotated
 
-from pydantic import BaseModel, Field
+from pydantic import BaseModel, Discriminator, ConfigDict
 
 import yaml
 
@@ -15,7 +16,7 @@
 
 # Small workaround to get pydantic discriminators working
 class LlmList(BaseModel):
-    llms: list[AnyLLM] = Field(discriminator="type")
+    llms: list[Annotated[AnyLLM, Discriminator("type")]]
 
 
 class LlmManager(metaclass=Singleton):
diff --git a/app/llm/request_handler/basic_request_handler.py b/app/llm/request_handler/basic_request_handler.py
index 0c1c835a..e2b07b43 100644
--- a/app/llm/request_handler/basic_request_handler.py
+++ b/app/llm/request_handler/basic_request_handler.py
@@ -1,7 +1,8 @@
 from typing import Optional, Sequence, Union, Dict, Any, Type, Callable
 
 from langchain_core.tools import BaseTool
-from pydantic.v1 import BaseModel
+from pydantic import ConfigDict
+from pydantic import BaseModel
 
 from app.common.pyris_message import PyrisMessage
 from app.domain.data.image_message_content_dto import ImageMessageContentDTO
@@ -13,9 +14,11 @@
 
 class BasicRequestHandler(RequestHandler):
     model_id: str
-    llm_manager: LlmManager
+    llm_manager: LlmManager | None = None
+    model_config = ConfigDict(arbitrary_types_allowed=True)
 
     def __init__(self, model_id: str):
+        super().__init__(model_id=model_id, llm_manager=None)
         self.model_id = model_id
         self.llm_manager = LlmManager()
 
diff --git a/app/llm/request_handler/capability_request_handler.py b/app/llm/request_handler/capability_request_handler.py
index cd8c876b..3d7f74ff 100644
--- a/app/llm/request_handler/capability_request_handler.py
+++ b/app/llm/request_handler/capability_request_handler.py
@@ -2,7 +2,8 @@
 from typing import Sequence, Union, Dict, Any, Type, Callable
 
 from langchain_core.tools import BaseTool
-from pydantic.v1 import BaseModel
+from pydantic import ConfigDict
+from pydantic import BaseModel
 
 from app.common.pyris_message import PyrisMessage
 from app.llm.capability import RequirementList
@@ -29,13 +30,17 @@ class CapabilityRequestHandler(RequestHandler):
 
     requirements: RequirementList
     selection_mode: CapabilityRequestHandlerSelectionMode
-    llm_manager: LlmManager
+    llm_manager: LlmManager | None = None
+    model_config = ConfigDict(arbitrary_types_allowed=True)
 
     def __init__(
         self,
         requirements: RequirementList,
         selection_mode: CapabilityRequestHandlerSelectionMode = CapabilityRequestHandlerSelectionMode.WORST,
     ) -> None:
+        super().__init__(
+            requirements=requirements, selection_mode=selection_mode, llm_manager=None
+        )
         self.requirements = requirements
         self.selection_mode = selection_mode
         self.llm_manager = LlmManager()
diff --git a/app/llm/request_handler/request_handler_interface.py b/app/llm/request_handler/request_handler_interface.py
index fb52225f..2bcd30db 100644
--- a/app/llm/request_handler/request_handler_interface.py
+++ b/app/llm/request_handler/request_handler_interface.py
@@ -1,7 +1,7 @@
 from abc import ABCMeta, abstractmethod
 from typing import Optional, Sequence, Union, Dict, Any, Type, Callable
 from langchain_core.tools import BaseTool
-from pydantic.v1 import BaseModel
+from pydantic import BaseModel
 
 from .. import LanguageModel
 from ...common.pyris_message import PyrisMessage
@@ -9,7 +9,7 @@
 from ...llm import CompletionArguments
 
 
-class RequestHandler(metaclass=ABCMeta):
+class RequestHandler(BaseModel, metaclass=ABCMeta):
     """Interface for the request handlers"""
 
     @classmethod
diff --git a/requirements.txt b/requirements.txt
index 2fe18cef..8abc4c44 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,23 +1,21 @@
-black==24.8.0
-fastapi==0.112.2
+black==24.10.0
+fastapi==0.115.5
 flake8==7.1.1
-langchain==0.2.14
-ollama==0.3.1
-openai==1.42.0
-pre-commit==3.8.0
-psutil==6.0.0
-pydantic==2.8.2
-PyMuPDF==1.24.9
+langchain==0.3.7
+ollama==0.3.3
+openai==1.54.4
+pre-commit==4.0.1
+psutil==6.1.0
+pydantic==2.9.2
+PyMuPDF==1.24.13
 pytz==2024.1
 PyYAML==6.0.2
 requests==2.32.3
 sentry-sdk[starlette,fastapi,openai]==2.13.0
-unstructured==0.15.7
-uvicorn==0.30.6
-weaviate-client==4.7.1
-langchain_openai==0.1.19
-starlette~=0.37.2
-langsmith~=0.1.75
-langgraph~=0.1.17
-langchain-core~=0.2.41
-langchain-text-splitters~=0.2.1
\ No newline at end of file
+unstructured==0.16.5
+uvicorn==0.32.0
+weaviate-client==4.9.3
+langchain-core~=0.3.17
+starlette~=0.41.2
+langsmith~=0.1.142
+langchain-text-splitters~=0.3.2
\ No newline at end of file