diff --git a/CHANGELOG.md b/CHANGELOG.md
index dbaec4c70..fda5187a0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -53,6 +53,7 @@
 - [#2917](https://github.com/influxdata/telegraf/issues/2917): Fix Aerospike input adds all nodes to a single series.
 - [#2452](https://github.com/influxdata/telegraf/pull/2452): Improve Prometheus Client output documentation.
 - [#2984](https://github.com/influxdata/telegraf/pull/2984): Display error message if prometheus output fails to listen.
+- [#2997](https://github.com/influxdata/telegraf/issues/2997): Fix elasticsearch output content type detection warning.
 
 ## v1.3.3 [2017-06-28]