diff --git a/code/lib/test/template/stories/utils.mock.ts b/code/lib/test/template/stories/utils.mock.ts
index 80fac1f308f2..bd3955dc0729 100644
--- a/code/lib/test/template/stories/utils.mock.ts
+++ b/code/lib/test/template/stories/utils.mock.ts
@@ -1,4 +1,4 @@
 import { fn } from '@storybook/test';
-import * as utils from './utils';
+import * as utils from './utils.ts';
 
 export const foo = fn(utils.foo).mockName('foo');