diff --git a/packages/vitest/src/node/types/reporter.ts b/packages/vitest/src/node/types/reporter.ts
index cb24aa57caa3..3c4e19088d95 100644
--- a/packages/vitest/src/node/types/reporter.ts
+++ b/packages/vitest/src/node/types/reporter.ts
@@ -14,6 +14,7 @@ export interface Reporter {
   /**
    * Called when the project initiated the browser instance.
    * project.browser will always be defined.
+   * @experimental
    */
   onBrowserInit?: (project: TestProject) => Awaitable<void>
   /**