diff --git a/CHANGELOG.md b/CHANGELOG.md
index c50633b5c..f829db041 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -25,6 +25,7 @@
 - [#1729](https://github.com/influxdata/telegraf/issues/1729): Add support to SNMP for OID index suffixes.
 - [#1813](https://github.com/influxdata/telegraf/pull/1813): Change default arguments for SNMP plugin.
 - [#1686](https://github.com/influxdata/telegraf/pull/1686): Mesos input plugin: very high-cardinality mesos-task metrics removed.
+- [#1839](https://github.com/influxdata/telegraf/pull/1839): Exact match with pgrep -x option in procstat
 
 ### Bugfixes