diff --git a/.changeset/fresh-timers-walk.md b/.changeset/fresh-timers-walk.md
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+---
+'@backstage/frontend-plugin-api': patch
+---
+
+Support overriding of plugin extensions using the new `plugin.override` method.
+
+```tsx
+import homePlugin from '@backstage/plugin-home';
+
+export default homePlugin.override({
+  extensions: [
+    homePage.getExtension('page:home').override({
+      *factory(originalFactory) {
+        yield* originalFactory();
+        yield coreExtensionData.reactElement(<h1>My custom home page</h1>);
+      },
+    }),
+  ],
+});
+```