diff --git a/release_note.md b/release_note.md
index a0eef86..b480632 100644
--- a/release_note.md
+++ b/release_note.md
@@ -1,6 +1,7 @@
 - Fix: on Linux, `~%` feeded line, but it did not carriage return
 - On gmnlisp changes
     - Support unicode character literal `#\U3042` like CommonLisp
+- Implement `(setenv "NAME" "VALUE")`
 
 v0.1.0
 ======