diff --git a/docs/source/basic_tutorials/launcher.md b/docs/source/basic_tutorials/launcher.md
index 77f88490..ce98876f 100644
--- a/docs/source/basic_tutorials/launcher.md
+++ b/docs/source/basic_tutorials/launcher.md
@@ -349,6 +349,12 @@ Options:
       --cors-allow-origin <CORS_ALLOW_ORIGIN>
           [env: CORS_ALLOW_ORIGIN=]
 
+```
+## API_KEY
+```shell
+      --api-key <API_KEY>
+          [env: API_KEY=]
+
 ```
 ## WATERMARK_GAMMA
 ```shell