diff --git a/litellm/types/completion.py b/litellm/types/completion.py
index aede0bc9ede..4d3f4b4b7f2 100644
--- a/litellm/types/completion.py
+++ b/litellm/types/completion.py
@@ -1,10 +1,15 @@
 from typing import List, Optional, Union, Iterable
 
-from pydantic import ConfigDict, BaseModel, validator
+from pydantic import ConfigDict, BaseModel, validator, VERSION
 
 from typing_extensions import Literal, Required, TypedDict
 
 
+# Function to get Pydantic version
+def is_pydantic_v2() -> int:
+    return int(VERSION.split(".")[0])
+
+
 class ChatCompletionSystemMessageParam(TypedDict, total=False):
     content: Required[str]
     """The contents of the system message."""
@@ -190,4 +195,9 @@ class CompletionRequest(BaseModel):
     api_version: Optional[str] = None
     api_key: Optional[str] = None
     model_list: Optional[List[str]] = None
-    model_config = ConfigDict(extra="allow", protected_namespaces=())
+
+    # Version-specific configuration
+    if is_pydantic_v2() >= 2:
+        model_config = ConfigDict(extra="allow", protected_namespaces=())
+    else:
+        model_config = ConfigDict(extra="allow")  # No protected_namespaces for v1