diff --git a/src/llm_models/model_client/gemini_client.py b/src/llm_models/model_client/gemini_client.py
index 4ff7d9d6..d80924ba 100644
--- a/src/llm_models/model_client/gemini_client.py
+++ b/src/llm_models/model_client/gemini_client.py
@@ -351,7 +351,8 @@ class GeminiClient(BaseClient):
 
         # 尝试传入自定义base_url(实验性，必须为Gemini格式)
         if hasattr(api_provider, "base_url") and api_provider.base_url:
-            self._api_client.http_options.base_url = api_provider.base_url
+            self.client._api_client._base_url = api_provider.base_url
+            self._api_client = self.client._api_client
 
     @staticmethod
     def clamp_thinking_budget(tb: int, model_id: str) -> int: