diff --git a/CHANGELOG.md b/CHANGELOG.md
index b2f8a720f..f4af75e6f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -18,6 +18,7 @@
 - [#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.
 - [#6465](https://github.com/influxdata/telegraf/pull/6465): Add more performance counter metrics to sqlserver input.
+- [#6476](https://github.com/influxdata/telegraf/pull/6476): Add millisecond unix time support to grok parser.
 
 ## v1.12.3 [unreleased]