diff --git a/CHANGELOG.md b/CHANGELOG.md
index c02a1ae..0b6105e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,13 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [2.3.0-alpha] - unreleased
+
+This is an alpha version! The changes listed here are not final.
+
+### Changed
+- Adjust 'get_site_id()' method to return null if there's no blog ID.
+
 ## [2.2.0] - 2024-01-18
 ### Added
 - Adding support for IDC when site URL is an IP address. [#34753]
@@ -950,6 +957,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Separate the connection library into its own package.
 
+[2.3.0-alpha]: https://github.com/Automattic/jetpack-connection/compare/v2.2.0...v2.3.0-alpha
 [2.2.0]: https://github.com/Automattic/jetpack-connection/compare/v2.1.1...v2.2.0
 [2.1.1]: https://github.com/Automattic/jetpack-connection/compare/v2.1.0...v2.1.1
 [2.1.0]: https://github.com/Automattic/jetpack-connection/compare/v2.0.3...v2.1.0
diff --git a/composer.json b/composer.json
index f8d6d65..306c41e 100644
--- a/composer.json
+++ b/composer.json
@@ -57,7 +57,7 @@
 			"link-template": "https://github.com/Automattic/jetpack-connection/compare/v${old}...v${new}"
 		},
 		"branch-alias": {
-			"dev-trunk": "2.2.x-dev"
+			"dev-trunk": "2.3.x-dev"
 		}
 	},
 	"config": {
diff --git a/src/class-package-version.php b/src/class-package-version.php
index 5096478..0e7e325 100644
--- a/src/class-package-version.php
+++ b/src/class-package-version.php
@@ -12,7 +12,7 @@
  */
 class Package_Version {
 
-	const PACKAGE_VERSION = '2.2.0';
+	const PACKAGE_VERSION = '2.3.0-alpha';
 
 	const PACKAGE_SLUG = 'connection';