diff --git a/test/types.d.ts b/test/types.d.ts
index 7dca9dfc028..29efadae4ba 100644
--- a/test/types.d.ts
+++ b/test/types.d.ts
@@ -195,6 +195,10 @@ export interface TestConfigFunction extends TestConfigBase {
 	 * Expected error when running bundle.generate().
 	 */
 	generateError?: RollupError;
+	/**
+	 * Rollup options for bundling.
+	 */
+	options?: RollupOptions;
 	/**
 	 * Make assertions against an expected runtime error.
 	 */