diff --git a/changelog.md b/changelog.md
index 8c2beab..ee9171f 100644
--- a/changelog.md
+++ b/changelog.md
@@ -3,8 +3,7 @@
 - Update function comments
 - Update the readme
 - Add interface to change the object distribution in the environment
-- 
-
+- Add Feature of obstacles random in the environment
 
 ## ir_sim 2.1.3
 - Fix errors in usages