diff --git a/CHANGELOG.prerelease.md b/CHANGELOG.prerelease.md
index 597322a9ce2a..29827f7c8cf0 100644
--- a/CHANGELOG.prerelease.md
+++ b/CHANGELOG.prerelease.md
@@ -1,3 +1,8 @@
+## 8.5.0-alpha.4
+
+- Next.js: Add support for Next 15 - [#29587](https://github.com/storybookjs/storybook/pull/29587), thanks @yannbf!
+- UI: Add Yarn to About Section - [#29225](https://github.com/storybookjs/storybook/pull/29225), thanks @grantwforsythe!
+
 ## 8.5.0-alpha.3
 
 - Addon Test: Fix post-install logic for Next.js Vite framework support - [#29524](https://github.com/storybookjs/storybook/pull/29524), thanks @valentinpalkovic!
diff --git a/code/package.json b/code/package.json
index 2fc645efc459..44959c123910 100644
--- a/code/package.json
+++ b/code/package.json
@@ -293,5 +293,6 @@
         "Dependency Upgrades"
       ]
     ]
-  }
+  },
+  "deferredNextVersion": "8.5.0-alpha.4"
 }
diff --git a/docs/versions/next.json b/docs/versions/next.json
index 617b3b564f76..61e79e389a3b 100644
--- a/docs/versions/next.json
+++ b/docs/versions/next.json
@@ -1 +1 @@
-{"version":"8.5.0-alpha.3","info":{"plain":"- Addon Test: Fix post-install logic for Next.js Vite framework support - [#29524](https://github.com/storybookjs/storybook/pull/29524), thanks @valentinpalkovic!\n- Core: Prevent clipping box shadow on file search modal - [#29523](https://github.com/storybookjs/storybook/pull/29523), thanks @ghengeveld!"}}
+{"version":"8.5.0-alpha.4","info":{"plain":"- Next.js: Add support for Next 15 - [#29587](https://github.com/storybookjs/storybook/pull/29587), thanks @yannbf!\n- UI: Add Yarn to About Section - [#29225](https://github.com/storybookjs/storybook/pull/29225), thanks @grantwforsythe!"}}