diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6de9977e7..589084efa 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,7 @@
 * FEATURE: reduce CPU usage for repeated queries over sliding time window when no new time series are added to the database.
   Typical use cases: repeated evaluation of alerting rules in [vmalert](https://victoriametrics.github.io/vmalert.html) or dashboard auto-refresh in Grafana.
 * FEATURE: vmagent: add OpenStack service discovery aka [openstack_sd_config](https://prometheus.io/docs/prometheus/latest/configuration/configuration/#openstack_sd_config).
+  See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/728 .
 * FEATURE: vmalert: make `-maxIdleConnections` configurable for datasource HTTP client. This option can be used for minimizing connection churn.
   See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/795 .
 * FEATURE: add `-influx.maxLineSize` command-line flag for configuring the maximum size for a single Influx line during parsing.