diff --git a/changelogs/client_server/newsfragments/1366.feature b/changelogs/client_server/newsfragments/1366.feature
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+Add `/rooms/<roomID>/timestamp_to_event` endpoint, as per [MSC3030](https://github.com/matrix-org/matrix-spec-proposals/pull/3030).
diff --git a/changelogs/server_server/newsfragments/1366.feature b/changelogs/server_server/newsfragments/1366.feature
new file mode 100644
index 00000000..22834501
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+++ b/changelogs/server_server/newsfragments/1366.feature
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+Add `/timestamp_to_event/<roomID>` endpoint, as per [MSC3030](https://github.com/matrix-org/matrix-spec-proposals/pull/3030).