diff --git a/packages/runtime-core/src/index.ts b/packages/runtime-core/src/index.ts
index 2f3b6543800..9ca4ecd1f32 100644
--- a/packages/runtime-core/src/index.ts
+++ b/packages/runtime-core/src/index.ts
@@ -147,6 +147,8 @@ export {
 } from '@vue/reactivity'
 export {
   // types
+  WatchEffect,
+  BaseWatchOptions,
   WatchOptions,
   WatchCallback,
   WatchSource,