diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index e387cb76..5a937ad0 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -6,6 +6,10 @@
 
 - fix #768: dump json file path error when folder name contains dot, such as `a.b.c`
 
+**Changed**
+
+- change: rename builtin function, sleep_N_secs => sleep
+
 ## 2.3.2 (2019-11-01)
 
 **Added**