diff --git a/render.py.md b/render.py.md
index ad52b4abb..0291bd367 100644
--- a/render.py.md
+++ b/render.py.md
@@ -2,4 +2,5 @@
 
 - a [[file]]
   - in [[go/agora-server]]
+  - https://github.com/flancian/agora-server/blob/main/app/render.py