diff --git a/packages/runtime-core/src/index.ts b/packages/runtime-core/src/index.ts
index ed929a027c2..86c1986941f 100644
--- a/packages/runtime-core/src/index.ts
+++ b/packages/runtime-core/src/index.ts
@@ -159,6 +159,7 @@ export {
 } from './component'
 export {
   ComponentOptions,
+  ComponentOptionsMixin,
   ComponentOptionsWithoutProps,
   ComponentOptionsWithObjectProps,
   ComponentOptionsWithArrayProps,