diff --git a/plugins/search-backend-module-techdocs/report.api.md b/plugins/search-backend-module-techdocs/report.api.md
index d0acf61f6f..fd5bc3db2e 100644
--- a/plugins/search-backend-module-techdocs/report.api.md
+++ b/plugins/search-backend-module-techdocs/report.api.md
@@ -13,6 +13,9 @@ import { TechDocsDocument } from '@backstage/plugin-techdocs-node';
 const _default: BackendFeature;
 export default _default;
 
+// @public (undocumented)
+export const defaultTechDocsCollatorDocumentTransformer: TechDocsCollatorDocumentTransformer;
+
 // @public (undocumented)
 export const defaultTechDocsCollatorEntityTransformer: TechDocsCollatorEntityTransformer;