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+## Version 2.9.0.0 Release Notes
+
+Compatible with OpenSearch 2.9.0
+
+### Maintenance
+Increment version to 2.9.0-SNAPSHOT ([#191](https://github.com/opensearch-project/neural-search/pull/191))
+
+### Bug Fixes
+Fix update document with knnn_vector size not matching issue ([#208](https://github.com/opensearch-project/neural-search/pull/208))