diff --git a/docs/en/ingest-management/processors/processor-add_cloud_metadata.asciidoc b/docs/en/ingest-management/processors/processor-add_cloud_metadata.asciidoc
index a05be276c..3f42bec73 100644
--- a/docs/en/ingest-management/processors/processor-add_cloud_metadata.asciidoc
+++ b/docs/en/ingest-management/processors/processor-add_cloud_metadata.asciidoc
@@ -60,6 +60,8 @@ include::processors.asciidoc[tag=processor-limitations]
 |
 a| List of provider names to use. If `providers` is not configured,
 all providers that do not access a remote endpoint are enabled by default.
+The list of providers may alternatively be configured with the environment variable `BEATS_ADD_CLOUD_METADATA_PROVIDERS`,
+by setting it to a comma-separated list of provider names.
 
 The list of supported provider names includes: