diff --git a/suivi/_metadata.yml b/suivi/_metadata.yml
index 2ac4ae2..bcb26dd 100644
--- a/suivi/_metadata.yml
+++ b/suivi/_metadata.yml
@@ -13,4 +13,6 @@ crossref:
       key: item
     - kind: float
       reference-prefix: Reference
-      key: ref
\ No newline at end of file
+      key: ref
+
+lightbox: true
\ No newline at end of file