diff --git a/index.md b/index.md
index bfc5fe9..77c6037 100644
--- a/index.md
+++ b/index.md
@@ -6,7 +6,7 @@
 
 -   [R for Graphics and Tables](https://wanganlin00.github.io/R4GT/)
 
--   [Bioinformatics Notes](https://wanganlin00.github.io/Bioinformatics/)
+-   [R for ML](https://wanganlin00.github.io/MachineLearning/)
 
 -   [R Notes](https://wanganlin00.github.io/R/)
 
@@ -14,6 +14,8 @@
 
 -   [BioProtocols Notes](https://wanganlin00.github.io/BioProtocols/)
 
+-   [Bioinformatics Notes](https://wanganlin00.github.io/Bioinformatics/)
+
 -   [Python Data Science Notes](https://wanganlin00.github.io/PythonDataScience/)
 
 ## 🐍 References