CHANGELOG.md in docusign_esign-3.12.0 vs CHANGELOG.md in docusign_esign-3.13.0.rc1

@@ -1,9 +1,15 @@
 # Change Log
 All notable changes to this project will be documented in this file.
 
 See [DocuSign Support Center](https://support.docusign.com/en/releasenotes/) for Product Release Notes.
 
+## [3.13.0.rc1] - ESignature API v2.1-21.3.00.00 - 2021-09-21
+### Changed
+- Added support for version v2.1-21.3.00.00 of the DocuSign ESignature API.
+- Updated the SDK release version.
+
+
 ## [v3.12.0] - ESignature API v2.1-21.2.02.00 - 2021-09-03
 ### Changed
 - Added support for version v2.1-21.2.02.00 of the DocuSign ESignature API.
 - Updated the SDK release version.