diff --git a/CHANGELOG.prerelease.md b/CHANGELOG.prerelease.md
index dc1270061fa3..bade8a334b3a 100644
--- a/CHANGELOG.prerelease.md
+++ b/CHANGELOG.prerelease.md
@@ -1,3 +1,11 @@
+## 8.3.0-alpha.9
+
+- Addon Viewport: Add default options via parameters - [#28944](https://github.com/storybookjs/storybook/pull/28944), thanks @ndelangen!
+- CLI: Make PackageJson optional for starting a dev server - [#28594](https://github.com/storybookjs/storybook/pull/28594), thanks @tobiasdiez!
+- Svelte: Fix events not being logged in Actions when a story has decorators - [#28247](https://github.com/storybookjs/storybook/pull/28247), thanks @JReinhold!
+- Vitest: Fix default viewport - [#28943](https://github.com/storybookjs/storybook/pull/28943), thanks @kasperpeulen!
+- Vitest: Implement add command for vitest addon - [#28920](https://github.com/storybookjs/storybook/pull/28920), thanks @kasperpeulen!
+
 ## 8.3.0-alpha.8
 
 - Addon Vitest: Improve transformation logic to avoid duplicate tests - [#28929](https://github.com/storybookjs/storybook/pull/28929), thanks @yannbf!
diff --git a/code/package.json b/code/package.json
index 264fb23412bb..d6adab474ae7 100644
--- a/code/package.json
+++ b/code/package.json
@@ -292,5 +292,6 @@
         "Dependency Upgrades"
       ]
     ]
-  }
+  },
+  "deferredNextVersion": "8.3.0-alpha.9"
 }
diff --git a/docs/versions/next.json b/docs/versions/next.json
index 713ecd1b6677..551af3e7b3d7 100644
--- a/docs/versions/next.json
+++ b/docs/versions/next.json
@@ -1 +1 @@
-{"version":"8.3.0-alpha.8","info":{"plain":"- Addon Vitest: Improve transformation logic to avoid duplicate tests - [#28929](https://github.com/storybookjs/storybook/pull/28929), thanks @yannbf!\n- Addon Vitest: Set default viewport if applicable - [#28905](https://github.com/storybookjs/storybook/pull/28905), thanks @yannbf!\n- Addon-docs: Remove babel dependency - [#28915](https://github.com/storybookjs/storybook/pull/28915), thanks @shilman!\n- Blocks: Fix scroll to non-ascii anchors - [#28826](https://github.com/storybookjs/storybook/pull/28826), thanks @SkReD!\n- Core: Introduce setProjectAnnotations API to more renderers and frameworks - [#28907](https://github.com/storybookjs/storybook/pull/28907), thanks @yannbf!\n- Dependencies: Upgrade `commander` - [#28857](https://github.com/storybookjs/storybook/pull/28857), thanks @43081j!\n- SvelteKit: Introduce portable stories support - [#28918](https://github.com/storybookjs/storybook/pull/28918), thanks @yannbf!"}}
+{"version":"8.3.0-alpha.9","info":{"plain":"- Addon Viewport: Add default options via parameters - [#28944](https://github.com/storybookjs/storybook/pull/28944), thanks @ndelangen!\n- CLI: Make PackageJson optional for starting a dev server - [#28594](https://github.com/storybookjs/storybook/pull/28594), thanks @tobiasdiez!\n- Svelte: Fix events not being logged in Actions when a story has decorators - [#28247](https://github.com/storybookjs/storybook/pull/28247), thanks @JReinhold!\n- Vitest: Fix default viewport - [#28943](https://github.com/storybookjs/storybook/pull/28943), thanks @kasperpeulen!\n- Vitest: Implement add command for vitest addon - [#28920](https://github.com/storybookjs/storybook/pull/28920), thanks @kasperpeulen!"}}