diff --git a/packages/runtime-core/src/index.ts b/packages/runtime-core/src/index.ts
index 06f9a2affd4..f388ba7b65d 100644
--- a/packages/runtime-core/src/index.ts
+++ b/packages/runtime-core/src/index.ts
@@ -69,6 +69,7 @@ export {
   defineEmits,
   defineExpose,
   defineOptions,
+  defineSlots,
   withDefaults,
   // internal
   mergeDefaults,