diff --git a/release-notes/opensearch-security-analytics.release-notes-2.18.0.0.md b/release-notes/opensearch-security-analytics.release-notes-2.18.0.0.md
new file mode 100644
index 000000000..a389a2128
--- /dev/null
+++ b/release-notes/opensearch-security-analytics.release-notes-2.18.0.0.md
@@ -0,0 +1,24 @@
+## Version 2.18.0.0 2024-10-28
+
+Compatible with OpenSearch 2.18.0
+
+### Maintenance
+* Incremented version to 2.18.0 ([#1314](https://github.com/opensearch-project/security-analytics/pull/1314))
+* update to lucene 9.12 ([#1349](https://github.com/opensearch-project/security-analytics/pull/1349))
+
+### Refactoring
+* separate doc-level monitor query indices created by detectors ([#1324](https://github.com/opensearch-project/security-analytics/pull/1324))
+* update number of replicas of system indices to 1-20 and number of primary shards for system indices to 1 ([#1358](https://github.com/opensearch-project/security-analytics/pull/1358))
+* update min number of replicas to 0 ([#1364](https://github.com/opensearch-project/security-analytics/pull/1364))
+* updated dedicated query index settings to true ([#1365](https://github.com/opensearch-project/security-analytics/pull/1365))
+* set the refresh policy to IMMEDIATE when updating correlation alerts ([#1382](https://github.com/opensearch-project/security-analytics/pull/1382))
+
+### Bug Fixes
+* remove redundant logic to fix OS launch exception and updates actions/upload-artifac2 to @V3 ([#1303](https://github.com/opensearch-project/security-analytics/pull/1303))
+* Add null check while adding fetched iocs into per-indicator-type map ([#1335](https://github.com/opensearch-project/security-analytics/pull/1335))
+* Fix notifications listener leak in threat intel monitor ([#1361](https://github.com/opensearch-project/security-analytics/pull/1361))
+* [Bug] Fixed ListIOCs number of findings cap. ([#1373](https://github.com/opensearch-project/security-analytics/pull/1373))
+* [Bug] Add exists check for IOCs index. ([#1392](https://github.com/opensearch-project/security-analytics/pull/1392))
+
+### Documentation
+* Added 2.18.0 release notes. ([#1399](https://github.com/opensearch-project/security-analytics/pull/1399))
\ No newline at end of file