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+## 2021-04-26 Version 1.0.0.0-beta1
+Compatible with OpenSearch 1.0.0-beta1
+
+## OpenSearch Migration
+* Migrate gantt chart to OpenSearch Dashboards ([#1](https://github.com/opensearch-project/dashboards-visualizations/pull/1))
+* Add license headers for OpenSearch ([#2](https://github.com/opensearch-project/dashboards-visualizations/pull/2))
+* Change plugin versions to 1.0.0 ([#3](https://github.com/opensearch-project/dashboards-visualizations/pull/3))
+* Bump version to beta1 for OpenSearch release ([#5](https://github.com/opensearch-project/dashboards-visualizations/pull/5))
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