diff --git a/CHANGELOG.md b/CHANGELOG.md
index f3a07b6f5..7bbfce4bd 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -14,6 +14,12 @@
 - [#6415](https://github.com/influxdata/telegraf/pull/6415): Allow graphite parser to create Inf and NaN values.
 - [#6434](https://github.com/influxdata/telegraf/pull/6434): Use prefix base detection for ints in grok parser.
 
+## v1.12.3 [unreleased]
+
+#### Bugfixes
+
+- [#6445](https://github.com/influxdata/telegraf/issues/6445): Use batch serialization format in exec output.
+
 ## v1.12.2 [2019-09-24]
 
 #### Bugfixes