diff --git a/code/addons/test/src/index.ts b/code/addons/test/src/index.ts
index dafa948eda6c..9a3583d228c5 100644
--- a/code/addons/test/src/index.ts
+++ b/code/addons/test/src/index.ts
@@ -1,2 +1,9 @@
+import type { storybookTest as storybookTestImport } from './plugin';
+
 // make it work with --isolatedModules
 export default {};
+
+// @ts-expect-error - this is a hack to make the module's sub-path augmentable
+declare module '@storybook/experimental-addon-test/vite-plugin' {
+  export const storybookTest: typeof storybookTestImport;
+}