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diff --git a/packages/integrations/cloudflare/CHANGELOG.md b/packages/integrations/cloudflare/CHANGELOG.md
index 6eb0368ce..19c246cdf 100644
--- a/packages/integrations/cloudflare/CHANGELOG.md
+++ b/packages/integrations/cloudflare/CHANGELOG.md
@@ -1,5 +1,49 @@
 # @astrojs/cloudflare
 
+## 3.1.0
+
+### Minor Changes
+
+- [#5056](https://github.com/withastro/astro/pull/5056) [`e55af8a23`](https://github.com/withastro/astro/commit/e55af8a23233b6335f45b7a04b9d026990fb616c) Thanks [@matthewp](https://github.com/matthewp)! - # New build configuration
+
+  The ability to customize SSR build configuration more granularly is now available in Astro. You can now customize the output folder for `server` (the server code for SSR), `client` (your client-side JavaScript and assets), and `serverEntry` (the name of the entrypoint server module). Here are the defaults:
+
+  ```js
+  import { defineConfig } from 'astro/config';
+
+  export default defineConfig({
+    output: 'server',
+    build: {
+      server: './dist/server/',
+      client: './dist/client/',
+      serverEntry: 'entry.mjs',
+    },
+  });
+  ```
+
+  These new configuration options are only supported in SSR mode and are ignored when building to SSG (a static site).
+
+  ## Integration hook change
+
+  The integration hook `astro:build:start` includes a param `buildConfig` which includes all of these same options. You can continue to use this param in Astro 1.x, but it is deprecated in favor of the new `build.config` options. All of the built-in adapters have been updated to the new format. If you have an integration that depends on this param we suggest upgrading to do this instead:
+
+  ```js
+  export default function myIntegration() {
+    return {
+      name: 'my-integration',
+      hooks: {
+        'astro:config:setup': ({ updateConfig }) => {
+          updateConfig({
+            build: {
+              server: '...',
+            },
+          });
+        },
+      },
+    };
+  }
+  ```
+
 ## 3.0.0
 
 ### Major Changes