diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index ba302a75cd..78bb807d39 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -13,6 +13,8 @@
 * FEATURE: consistently return text-based HTTP responses such as `plain/text` and `application/json` with `charset=utf-8`.
   See https://github.com/VictoriaMetrics/VictoriaMetrics/pull/897
 * FEATURE: update Go builder from v1.15.4 to v1.15.5. This should fix [these issues in Go](https://github.com/golang/go/issues?q=milestone%3AGo1.15.5+label%3ACherryPickApproved).
+* FEATURE: added `/internal/force_flush` http handler for flushing recently ingested data from in-memory buffers to persistent storage.
+  See [troubleshooting docs](https://victoriametrics.github.io/#troubleshooting) for more details.
 
 * BUGFIX: do not return data points in the end of the selected time range for time series ending in the middle of the selected time range.
   See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/887 and https://github.com/VictoriaMetrics/VictoriaMetrics/issues/845
diff --git a/docs/Single-server-VictoriaMetrics.md b/docs/Single-server-VictoriaMetrics.md
index e96ebea1d9..dd1d83edfa 100644
--- a/docs/Single-server-VictoriaMetrics.md
+++ b/docs/Single-server-VictoriaMetrics.md
@@ -1211,7 +1211,8 @@ VictoriaMetrics also exposes currently running queries with their execution time
 
 * VictoriaMetrics buffers incoming data in memory for up to a few seconds before flushing it to persistent storage.
   This may lead to the following "issues":
-  * Data becomes available for querying in a few seconds after inserting.
+  * Data becomes available for querying in a few seconds after inserting. It is possible to flush in-memory buffers to persistent storage
+    by requesting `/internal/force_flush` http handler.
   * The last few seconds of inserted data may be lost on unclean shutdown (i.e. OOM, `kill -9` or hardware reset).
     See [this article for technical details](https://valyala.medium.com/wal-usage-looks-broken-in-modern-time-series-databases-b62a627ab704).