diff --git a/content/chapter-parsers/opentelemetry/_index.md b/content/chapter-parsers/opentelemetry/_index.md
index 8c5484de..2e6c1f32 100644
--- a/content/chapter-parsers/opentelemetry/_index.md
+++ b/content/chapter-parsers/opentelemetry/_index.md
@@ -27,3 +27,16 @@ String, bool, int64, double, and bytes values are mapped to their respective {{%
 The mapping of AnyValue type fields is limited.
 
 `ArrayValue` and `KeyValueList` types are stored serialized with protobuf type. Note that `protobuf` and `bytes` types are only available, unless explicitly type cast. For example, `bytes(${.otel.log.span_id})`. When using template functions, use `--include-bytes`, for example, `$(format-json .otel.* --include-bytes`. In the case of `$(format-json)`, the content is base64-encoded into the bytes content.
+
+## Options
+
+## set-hostname()
+
+|           |                              |
+| --------- | ---------------------------- |
+| Synopsis: | `yes | no ` |
+| Default: | `yes` |
+
+Available in {{< product >}} 4.8 and later.
+
+*Description:* If set to yes, the parser extracts the `host.name` resource attribute if available in the message. Otherwise, it leaves the [HOST](https://opentelemetry.io/docs/specs/semconv/attributes-registry/host/) field as-is.
diff --git a/content/chapter-sources/opentelemetry/_index.md b/content/chapter-sources/opentelemetry/_index.md
index e31c309f..00bb78ce 100644
--- a/content/chapter-sources/opentelemetry/_index.md
+++ b/content/chapter-sources/opentelemetry/_index.md
@@ -37,6 +37,10 @@ log otel_forward_mode_alts {
 
 {{< include-headless "chunk/option-source-concurrent-requests.md" >}}
 
+## keep-hostname()
+
+The `opentelemetry()` source ignores this option and uses the address of the OTLP peer as the HOST.
+
 {{% include-headless "chunk/option-source-log-fetch-limit.md" %}}
 
 ## `port()` {#port}
diff --git a/content/chapter-sources/source-syslog-ng-otlp/_index.md b/content/chapter-sources/source-syslog-ng-otlp/_index.md
index f850ba15..2d3fe8d4 100644
--- a/content/chapter-sources/source-syslog-ng-otlp/_index.md
+++ b/content/chapter-sources/source-syslog-ng-otlp/_index.md
@@ -65,7 +65,9 @@ The `syslog-ng-otlp()` source has the following options.
 
 {{< include-headless "chunk/option-source-host-override.md" >}}
 
-{{< include-headless "chunk/option-source-keep-hostname.md" >}}
+## keep-hostname()
+
+The `syslog-ng-otlp()` source ignores this option and uses the hostname from the message as the `${HOST}`.
 
 {{< include-headless "chunk/option-source-keep-timestamp.md" >}}
 
diff --git a/content/whats-new/_index.md b/content/whats-new/_index.md
index 35ad3340..e1c78521 100644
--- a/content/whats-new/_index.md
+++ b/content/whats-new/_index.md
@@ -12,6 +12,7 @@ This page is a changelog that collects the major changes and additions to this d
 - You can send messages and metrics to [Elasticsearch data streams](https://www.elastic.co/guide/en/elasticsearch/reference/current/data-streams.html) to store your log and metrics data as time series data using the [`elasticsearch-datastream()`]({{< relref "/chapter-destinations/elasticsearch-data-stream/_index.md" >}}) destination driver.
 - You can use the [`server-side-encryption()`]({{< relref "/chapter-destinations/destination-s3/_index.md#server-side-encryption" >}}) and [`kms-key()`]({{< relref "/chapter-destinations/destination-s3/_index.md#kms-key" >}}) options to configure encryption for [Amazon S3 destinations]({{< relref "/chapter-destinations/destination-s3/_index.md" >}}).
 - You can now set static gRPC headers in the [`bigquery()`]({{< relref "/chapter-destinations/google-bigquery/_index.md#headers" >}}), [`loki()`]({{< relref "/chapter-destinations/destination-loki/_index.md#headers" >}}), and the [`opentelemetry()`]({{< relref "/chapter-destinations/opentelemetry/_index.md#headers" >}}) destinations.
+- The `opentelemetry()` parser has a new [`set-hostname()`]({{< relref "/chapter-parsers/opentelemetry/_index.md#set-hostname" >}}) option.
 
 ## Version 4.7 release (2024-04-18)