diff --git a/CHANGELOG-3.5.md b/CHANGELOG-3.5.md
index 54c93c4e3249..2e1159eba20f 100644
--- a/CHANGELOG-3.5.md
+++ b/CHANGELOG-3.5.md
@@ -228,6 +228,7 @@ Note that any `etcd_debugging_*` metrics are experimental and subject to change.
 
 - Require [*Go 1.15+*](https://github.com/etcd-io/etcd/pull/11110).
 - Compile with [*Go 1.15*](https://golang.org/doc/devel/release.html#go1.15)
+- Etcd uses go [modules](https://github.com/etcd-io/etcd/pull/12279) (instead of vendor dir) to track dependencies.
 
 ### Project Governance