diff --git a/litellm/types/router.py b/litellm/types/router.py
index f9f6fd989f..e8f3ff6412 100644
--- a/litellm/types/router.py
+++ b/litellm/types/router.py
@@ -1,6 +1,6 @@
 from typing import List, Optional, Union, Dict, Tuple, Literal
 import httpx
-from pydantic import ConfigDict, BaseModel, validator, Field
+from pydantic import BaseModel, validator, Field
 from .completion import CompletionRequest
 from .embedding import EmbeddingRequest
 import uuid, enum
@@ -11,7 +11,9 @@ class ModelConfig(BaseModel):
     litellm_params: Union[CompletionRequest, EmbeddingRequest]
     tpm: int
     rpm: int
-    model_config = ConfigDict(protected_namespaces=())
+
+    class Config:
+        protected_namespaces = ()
 
 
 class RouterConfig(BaseModel):
@@ -41,7 +43,9 @@ class RouterConfig(BaseModel):
         "usage-based-routing",
         "latency-based-routing",
     ] = "simple-shuffle"
-    model_config = ConfigDict(protected_namespaces=())
+
+    class Config:
+        protected_namespaces = ()
 
 
 class UpdateRouterConfig(BaseModel):
@@ -60,13 +64,15 @@ class UpdateRouterConfig(BaseModel):
     retry_after: Optional[float] = None
     fallbacks: Optional[List[dict]] = None
     context_window_fallbacks: Optional[List[dict]] = None
-    model_config = ConfigDict(protected_namespaces=())
+
+    class Config:
+        protected_namespaces = ()
 
 
 class ModelInfo(BaseModel):
     id: Optional[
         str
-    ] = None  # Allow id to be optional on input, but it will always be present as a str in the model instance
+    ]  # Allow id to be optional on input, but it will always be present as a str in the model instance
     db_model: bool = (
         False  # used for proxy - to separate models which are stored in the db vs. config.
     )
@@ -77,7 +83,9 @@ class ModelInfo(BaseModel):
         elif isinstance(id, int):
             id = str(id)
         super().__init__(id=id, **params)
-    model_config = ConfigDict(extra="allow")
+
+    class Config:
+        extra = "allow"
 
     def __contains__(self, key):
         # Define custom behavior for the 'in' operator
@@ -171,7 +179,10 @@ class GenericLiteLLMParams(BaseModel):
         if max_retries is not None and isinstance(max_retries, str):
             max_retries = int(max_retries)  # cast to int
         super().__init__(max_retries=max_retries, **args, **params)
-    model_config = ConfigDict(extra="allow", arbitrary_types_allowed=True)
+
+    class Config:
+        extra = "allow"
+        arbitrary_types_allowed = True
 
     def __contains__(self, key):
         # Define custom behavior for the 'in' operator
@@ -229,7 +240,10 @@ class LiteLLM_Params(GenericLiteLLMParams):
         if max_retries is not None and isinstance(max_retries, str):
             max_retries = int(max_retries)  # cast to int
         super().__init__(max_retries=max_retries, **args, **params)
-    model_config = ConfigDict(extra="allow", arbitrary_types_allowed=True)
+
+    class Config:
+        extra = "allow"
+        arbitrary_types_allowed = True
 
     def __contains__(self, key):
         # Define custom behavior for the 'in' operator
@@ -258,7 +272,9 @@ class updateDeployment(BaseModel):
     model_name: Optional[str] = None
     litellm_params: Optional[updateLiteLLMParams] = None
     model_info: Optional[ModelInfo] = None
-    model_config = ConfigDict(protected_namespaces=())
+
+    class Config:
+        protected_namespaces = ()
 
 
 class Deployment(BaseModel):
@@ -290,7 +306,10 @@ class Deployment(BaseModel):
         except Exception as e:
             # if using pydantic v1
             return self.dict(**kwargs)
-    model_config = ConfigDict(extra="allow", protected_namespaces=())
+
+    class Config:
+        extra = "allow"
+        protected_namespaces = ()
 
     def __contains__(self, key):
         # Define custom behavior for the 'in' operator