diff --git a/changelogs/head.asciidoc b/changelogs/head.asciidoc
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--- a/changelogs/head.asciidoc
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@@ -5,6 +5,8 @@ https://github.com/elastic/apm-server/compare/8.16\...8.x[View commits]
 
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 ==== Breaking Changes
+- Elasticsearch `apm_user` role has been removed. After this change additional permissions are required for Tail Based Sampling.
+For more details, see https://github.com/elastic/apm-server/pull/14876[PR #14876]
 
 [float]
 ==== Deprecations