diff --git a/.github/workflows/site.yml b/.github/workflows/site.yml
index 338e51a..cb762b3 100644
--- a/.github/workflows/site.yml
+++ b/.github/workflows/site.yml
@@ -29,11 +29,13 @@ jobs:
     uses: jlt-commons/ci-builds/.github/workflows/site.yml@main
     with:
       base-path: /ebb
+      # v0.4.1 adds nav search (search-documents.json + lazily loaded lunr);
+      # v0.3.1 heading anchors, v0.3.2 the jolt build/clean fix.
       # v0.3.0 adds a default Contributing page to every project's guide
       # (docs-engine README, "The default Contributing page"). Pinned here
       # rather than left on the shared workflow's own default so this
       # project's build stays reproducible even after that default moves on.
-      docs-engine-ref: v0.3.0
+      docs-engine-ref: v0.4.1
     permissions:
       contents: read
       pages: write