diff --git a/.changeset/wild-eyes-grab.md b/.changeset/wild-eyes-grab.md
index d97c92d99e..f382c406f3 100644
--- a/.changeset/wild-eyes-grab.md
+++ b/.changeset/wild-eyes-grab.md
@@ -2,9 +2,13 @@
 '@backstage/plugin-search-backend-module-elasticsearch': minor
 ---
 
-**BREAKING** The ElasticSearch indexer will now delete stale indices matching the indexer's pattern.
+**BREAKING**: The ElasticSearch indexer will now delete stale indices matching the indexer's pattern.
+The method `getAliases` of `ElasticSearchClientWrapper` has been deprecated and might be removed in future releases.
 
 An indexer using the `some-type-index__*` pattern will remove indices matching this pattern after indexation
 to prevent stale indices leading to shards exhaustion.
 
+Before upgrading ensure that the index pattern doesn't match indices that are not managed by Backstage
+and thus shouldn't be deleted.
+
 Note: The ElasticSearch indexer already uses wildcards patterns to remove aliases on these indices.