diff --git a/docs/README.md b/docs/README.md
index 649f330d1..cde61e0c4 100644
--- a/docs/README.md
+++ b/docs/README.md
@@ -533,9 +533,11 @@ or via [configuration file](https://docs.datadoghq.com/agent/guide/agent-configu
 To configure DataDog agent via ENV variable add the following prefix:
 
 <div class="with-copy" markdown="1">
+
 ```
 DD_DD_URL=http://victoriametrics:8428/datadog
 ```
+
 </div>
 
 _Choose correct URL for VictoriaMetrics [here](https://docs.victoriametrics.com/url-examples.html#datadog)._
@@ -569,6 +571,7 @@ Run DataDog using the following ENV variable with VictoriaMetrics as additional
 DD_ADDITIONAL_ENDPOINTS='{\"http://victoriametrics:8428/datadog\": [\"apikey\"]}'
 
 ```
+
 </div>
 
 _Choose correct URL for VictoriaMetrics [here](https://docs.victoriametrics.com/url-examples.html#datadog)._
@@ -1767,6 +1770,9 @@ This aligns with the [staleness rules in Prometheus](https://prometheus.io/docs/
 If multiple raw samples have **the same timestamp** on the given `-dedup.minScrapeInterval` discrete interval, 
 then the sample with **the biggest value** is kept.
 
+Prometheus stale markers are respected as any other value. If raw sample with the biggest timestamp on `-dedup.minScrapeInterval`
+has a stale marker as a value - it will be kept after the deduplication.
+
 Please note, [labels](https://docs.victoriametrics.com/keyConcepts.html#labels) of raw samples should be identical
 in order to be deduplicated. For example, this is why [HA pair of vmagents](https://docs.victoriametrics.com/vmagent.html#high-availability)
 needs to be identically configured. 
diff --git a/docs/Single-server-VictoriaMetrics.md b/docs/Single-server-VictoriaMetrics.md
index e10f47017..959db920b 100644
--- a/docs/Single-server-VictoriaMetrics.md
+++ b/docs/Single-server-VictoriaMetrics.md
@@ -1778,6 +1778,9 @@ This aligns with the [staleness rules in Prometheus](https://prometheus.io/docs/
 If multiple raw samples have **the same timestamp** on the given `-dedup.minScrapeInterval` discrete interval, 
 then the sample with **the biggest value** is kept.
 
+Prometheus stale markers are respected as any other value. If raw sample with the biggest timestamp on `-dedup.minScrapeInterval`
+has a stale marker as a value - it will be kept after the deduplication.
+
 Please note, [labels](https://docs.victoriametrics.com/keyConcepts.html#labels) of raw samples should be identical
 in order to be deduplicated. For example, this is why [HA pair of vmagents](https://docs.victoriametrics.com/vmagent.html#high-availability)
 needs to be identically configured.