diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index 722aa6cff1..ba4d9c277a 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -6,6 +6,7 @@ sort: 15
 
 ## tip
 
+* FEATURE: [vmui](https://docs.victoriametrics.com/#vmui): add ability to analyze the correlation between two queries on a single graph. Just click `+Query` button, enter the second query in the newly appeared input field and press `Ctrl+Enter`. Results for both queries should be displayed simultaneously on the same graph. Every query has its own vertical scale, which is displayed on the left and the right side of the graph. Lines for the second query are dashed. See [this pull request](https://github.com/VictoriaMetrics/VictoriaMetrics/pull/1916).
 * FEATURE: accept optional `extra_filters[]=series_selector` query args at Prometheus query APIs additionally to `extra_label` query args. This allows enforcing additional filters for all the Prometheus query APIs by using [vmgateway](https://docs.victoriametrics.com/vmgateway.html) or [vmauth](https://docs.victoriametrics.com/vmauth.html). See [this feature request](https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1863).
 * FEATURE: [vmauth](https://docs.victoriametrics.com/vmauth.html): allow specifying `http` and `https` urls in `-auth.config` command-line flag. See [this pull request](https://github.com/VictoriaMetrics/VictoriaMetrics/pull/1898). Thanks for @TFM93 .
 * FEATURE: [vmagent](https://docs.victoriametrics.com/vmagent.html): allow specifying `http` and `https` urls in the following command-line flags: `-promscrape.config`, `-remoteWrite.relabelConfig` and `-remoteWrite.urlRelabelConfig`.
diff --git a/docs/README.md b/docs/README.md
index 941410c988..bff95b5c3a 100644
--- a/docs/README.md
+++ b/docs/README.md
@@ -611,6 +611,8 @@ Query history can be navigated by holding `Ctrl` (or `Cmd` on MacOS) and pressin
 
 When querying the [backfilled data](https://docs.victoriametrics.com/#backfilling), it may be useful disabling response cache by clicking `Enable cache` checkbox.
 
+VMUI allows investigating correlations between two queries on the same graph. Just click `+Query` button, enter the second query in the newly appeared input field and press `Ctrl+Enter`. Results for both queries should be displayed simultaneously on the same graph. Every query has its own vertical scale, which is displayed on the left and the right side of the graph. Lines for the second query are dashed.
+
 See the [example VMUI at VictoriaMetrics playground](https://play.victoriametrics.com/select/accounting/1/6a716b0f-38bc-4856-90ce-448fd713e3fe/prometheus/graph/?g0.expr=100%20*%20sum(rate(process_cpu_seconds_total))%20by%20(job)&g0.range_input=1d).
 
 
diff --git a/docs/Single-server-VictoriaMetrics.md b/docs/Single-server-VictoriaMetrics.md
index 30b85c6952..7e010f70ff 100644
--- a/docs/Single-server-VictoriaMetrics.md
+++ b/docs/Single-server-VictoriaMetrics.md
@@ -615,6 +615,8 @@ Query history can be navigated by holding `Ctrl` (or `Cmd` on MacOS) and pressin
 
 When querying the [backfilled data](https://docs.victoriametrics.com/#backfilling), it may be useful disabling response cache by clicking `Enable cache` checkbox.
 
+VMUI allows investigating correlations between two queries on the same graph. Just click `+Query` button, enter the second query in the newly appeared input field and press `Ctrl+Enter`. Results for both queries should be displayed simultaneously on the same graph. Every query has its own vertical scale, which is displayed on the left and the right side of the graph. Lines for the second query are dashed.
+
 See the [example VMUI at VictoriaMetrics playground](https://play.victoriametrics.com/select/accounting/1/6a716b0f-38bc-4856-90ce-448fd713e3fe/prometheus/graph/?g0.expr=100%20*%20sum(rate(process_cpu_seconds_total))%20by%20(job)&g0.range_input=1d).