diff --git a/lightrag/api/lightrag_server.py b/lightrag/api/lightrag_server.py
index 328e7953..ec1d38d5 100644
--- a/lightrag/api/lightrag_server.py
+++ b/lightrag/api/lightrag_server.py
@@ -248,6 +248,7 @@ def create_app(args):
             azure_openai_complete_if_cache,
             azure_openai_embed,
         )
+        from lightrag.llm.binding_options import OpenAILLMOptions
     if args.llm_binding == "aws_bedrock" or args.embedding_binding == "aws_bedrock":
         from lightrag.llm.bedrock import bedrock_complete_if_cache, bedrock_embed
     if args.embedding_binding == "ollama":