diff --git a/README.md b/README.md
index e7f5ae7..f23f79a 100644
--- a/README.md
+++ b/README.md
@@ -14,7 +14,7 @@
   <a href="#requirements">Requirements</a> •
   <a href="#installation">Installation</a> •
   <a href="https://tronscan.org">tronscan.org</a>  •
-  <a href="https://api.tronscan.org">api.tronscan.org</a>
+  <a href="https://github.com/tronscan/tronscan-frontend/blob/dev2019/document/api.md">api.tronscan.org</a>
 </p>
 
 ## Intro