diff --git a/.env.example b/.env.example
index e1a7172..81ae084 100644
--- a/.env.example
+++ b/.env.example
@@ -18,3 +18,6 @@ FEISHU_APP_SECRET=your_feishu_app_secret
 SILICONFLOW_API_KEY=your_siliconflow_api_key
 DEEPSEEK_API_KEY=your_deepseek_api_key
 GROK_API_KEY=your_grok_api_key
+
+# Grok API Base URL (optional)
+GROK_BASE_URL=https://api.x.ai