diff --git a/plugins/plugin-search/src/node/prepareSearchIndex.ts b/plugins/plugin-search/src/node/prepareSearchIndex.ts
index 02372aac..fac14cc7 100644
--- a/plugins/plugin-search/src/node/prepareSearchIndex.ts
+++ b/plugins/plugin-search/src/node/prepareSearchIndex.ts
@@ -49,6 +49,9 @@ export async function prepareSearchIndex({
   searchOptions,
 }: SearchIndexOptions): Promise<void> {
   const start = performance.now()
+  indexByLocales.clear()
+  indexCache.clear()
+
   const pages = isSearchable ? app.pages.filter(isSearchable) : app.pages
   await pMap(pages, p => indexFile(p, searchOptions), {
     concurrency: 64,