diff --git a/README.md b/README.md
index f111281579e36692e036767a8212467014a664e4..f366b4a1aafb490bd28e09af77dab1d435e11911 100644
--- a/README.md
+++ b/README.md
@@ -199,7 +199,7 @@ Part of the code is adapted from [LeGO-LOAM](https://github.com/RobustFieldAuton
 
 ## TODO
 
-  - [ ]
+  - [ ] Add loop closure visualization and fix potential bug
 
 ## Acknowledgement