diff --git a/.claude/docs/docsearch-filters.md b/.claude/docs/docsearch-filters.md
index 3b75c9393..b455da8e9 100644
--- a/.claude/docs/docsearch-filters.md
+++ b/.claude/docs/docsearch-filters.md
@@ -63,13 +63,20 @@ To add new sections:
 ### VuePress Configuration
 The DocSearch configuration in `docs/.vuepress/config.ts` includes:
 ```typescript
-searchParameters: {
-  hitsPerPage: 100,
-  facetFilters: [`version:${setup.base}`],
-  facets: ['tags']
-}
+indices: [
+  {
+    name: 'prod_rundeck_docs',
+    searchParameters: {
+      hitsPerPage: 100,
+      facetFilters: [`version:${setup.base}`],
+      facets: ['tags']
+    },
+  },
+],
 ```
 
+`@vuepress/plugin-docsearch` rc.134+ requires `indices`. Do not use the legacy root-level `indexName` / `searchParameters`: `indices` ends up undefined and clicking Search throws `TypeError: Cannot read properties of undefined (reading 'map')`.
+
 The `facets: ['tags']` tells Algolia to include tags as filterable attributes.
 
 ## Styling
diff --git a/.claude/docs/writing-style.md b/.claude/docs/writing-style.md
index 83e6ce932..4ca541296 100644
--- a/.claude/docs/writing-style.md
+++ b/.claude/docs/writing-style.md
@@ -43,7 +43,7 @@ Search is powered by Algolia DocSearch via `@vuepress/plugin-docsearch`.
 | Index name | `prod_rundeck_docs` |
 | Scraper | `algolia/docsearch-scraper` Docker image, driven by CircleCI |
 | Scraper config | `.docsearch/config.json` (selectors, start URLs, faceting attributes) |
-| VuePress plugin config | `docs/.vuepress/config.ts` (`appId`, `apiKey`, `searchParameters`) |
+| VuePress plugin config | `docs/.vuepress/config.ts` (`appId`, `apiKey`, `indices[].searchParameters`) |
 | Current facets | `version` (e.g. `docs`, `4.0.x`), `lang` |
 | Section tags | Applied via URL patterns in `start_urls` (Learning, User Guide, API, Administration, Developer, Release Notes, General) |
 
@@ -52,8 +52,8 @@ The custom section-filter UI is documented in `.claude/docs/docsearch-filters.md
 ### When Search Won't Update
 
 - After adding new `start_urls` with tags to `.docsearch/config.json`, re-scrape the index — existing records carry stale tags until re-indexed.
-- `searchParameters.facetFilters` in `docs/.vuepress/config.ts` MUST include `version:${setup.base}` so results scope correctly to the current version.
-- `searchParameters.facets` MUST include `'tags'` for the filter UI to work.
+- `indices[].searchParameters.facetFilters` in `docs/.vuepress/config.ts` MUST include `version:${setup.base}` so results scope correctly to the current version.
+- `indices[].searchParameters.facets` MUST include `'tags'` for the filter UI to work.
 
 ## Content Directory Structure
 
diff --git a/docs/.vuepress/config.ts b/docs/.vuepress/config.ts
index 6d6f75013..625ac6103 100644
--- a/docs/.vuepress/config.ts
+++ b/docs/.vuepress/config.ts
@@ -128,13 +128,17 @@ export default defineUserConfig({
       docsearch: {
         appId: 'GRSXNRCDRG',
         apiKey: 'c463f74d6f36a5af808650e0f69aadfa',
-        indexName: 'prod_rundeck_docs',
+        indices: [
+          {
+            name: 'prod_rundeck_docs',
+            searchParameters: {
+              hitsPerPage: 100,
+              facetFilters: [`version:${setup.base}`],
+              facets: ['tags']
+            },
+          },
+        ],
         maxResultsPerGroup: 20,
-        searchParameters: {
-          hitsPerPage: 100,
-          facetFilters: [`version:${setup.base}`],
-          facets: ['tags']
-        },
         locales: {
           '/': {
             placeholder: 'Search Documentation',