diff --git a/litellm/types/llms/openai.py b/litellm/types/llms/openai.py
index df746036da..24f54bdfec 100644
--- a/litellm/types/llms/openai.py
+++ b/litellm/types/llms/openai.py
@@ -690,8 +690,7 @@ class FineTuningJobCreate(BaseModel):
 class LiteLLMFineTuningJobCreate(FineTuningJobCreate):
     custom_llm_provider: Literal["openai", "azure", "vertex_ai"]
 
-    class Config:
-        extra = "allow"  # This allows the model to accept additional fields
+    model_config = {"extra": "allow"}  # This allows the model to accept additional fields
 
 
 AllEmbeddingInputValues = Union[str, List[str], List[int], List[List[int]]]