diff --git a/releasenotes/notes/deprecate-elasticsearch-for-opensearch-a338965edff23509.yaml b/releasenotes/notes/deprecate-elasticsearch-for-opensearch-a338965edff23509.yaml
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+++ b/releasenotes/notes/deprecate-elasticsearch-for-opensearch-a338965edff23509.yaml
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+---
+deprecations:
+  - |
+    Support for using Elasticsearch as a storage backend is being deprecated in
+    the Antelope release in favour of OpenSearch. We will try to keep
+    CloudKitty compatible with both solutions. However, we will only test with
+    OpenSearch.