diff --git a/tsup.config.ts b/tsup.config.ts
index c41b313..7eca1a7 100644
--- a/tsup.config.ts
+++ b/tsup.config.ts
@@ -17,6 +17,6 @@ export default defineConfig({
   dts: {
     entry: ['./src/index.ts'],
     resolve: true,
-    banner: '/// <reference types="jest" />',
+    banner: '/// <reference types="jest" />\n/// <reference types="@testing-library/jest-dom" />',
   },
 });