diff --git a/README.md b/README.md
index a50acfdc85ddf939be8d851f6f856ac9c0d4c204..5fe41423ece6c693835a68875fb1544f9798c070 100644
--- a/README.md
+++ b/README.md
@@ -5,3 +5,6 @@ We're going to implement,
   * three built‐in commands in shells, pwd, cd, alias
 
 If you have any questions, please send to ajou-2018-spring-operating-systems@googlegroups.com
+
+TODO:
+  * Update for alias implementation