diff --git a/docker/docs/Dockerfile b/docker/docs/Dockerfile
index 59dd8fc75..27a634324 100644
--- a/docker/docs/Dockerfile
+++ b/docker/docs/Dockerfile
@@ -1,6 +1,7 @@
 FROM debian:bookworm
 
-ENV QUARTO_VERSION 1.5.53
+# synced with the one in https://github.com/stan-dev/stan-dev.github.io/blob/master/.github/workflows/build.yml
+ENV QUARTO_VERSION 1.6.39
 
 ARG PUID
 ARG PGID
diff --git a/src/_quarto.yml b/src/_quarto.yml
index a28afc850..4d21435f1 100644
--- a/src/_quarto.yml
+++ b/src/_quarto.yml
@@ -28,8 +28,7 @@ website:
   image: img/logo_tm.png
   reader-mode: true
   page-navigation: true
-  search:
-    limit: 200 # potentially slow but workaround for https://github.com/quarto-dev/quarto-cli/issues/8986
+  open-graph: true
   back-to-top-navigation: true
   repo-url: https://github.com/stan-dev/docs
   repo-subdir: src