diff --git a/libs/langchain/langchain/chat_models/litellm.py b/libs/langchain/langchain/chat_models/litellm.py
index 1a35f1d47d..a499ece4f7 100644
--- a/libs/langchain/langchain/chat_models/litellm.py
+++ b/libs/langchain/langchain/chat_models/litellm.py
@@ -207,6 +207,7 @@ class ChatLiteLLM(BaseChatModel):
             "stream": self.streaming,
             "n": self.n,
             "temperature": self.temperature,
+            "custom_llm_provider": self.custom_llm_provider,
             **self.model_kwargs,
         }