diff --git a/CHANGELOG.md b/CHANGELOG.md
index 70c2f656ff5340a9839db389d3fad4e02b6a5caa..84ad2c19105073ad47e7e88811cebe01c5e3e8a2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -36,6 +36,7 @@
 ### Bugfixes
 
 - [#4078](https://github.com/influxdata/telegraf/pull/4078): Use same timestamp for fields in system input.
+- [#4091](https://github.com/influxdata/telegraf/pull/4091): Fix handling of uint64 in datadog output.
 
 ## v1.6.1 [2018-04-23]