diff --git a/CHANGELOG.md b/CHANGELOG.md
index 611e973e1..6bdd27298 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,7 @@
 ### Features
 
 - [#3964](https://github.com/influxdata/telegraf/pull/3964): Add repl_oplog_window_sec metric to mongodb input.
+- [#3819](https://github.com/influxdata/telegraf/pull/3819): Add per-host shard metrics in mongodb input.
 
 ## v1.6 [unreleased]