diff --git a/vendor/html-theme-ref b/vendor/html-theme-ref
index 21e57f7..ed3fb63 160000
--- a/vendor/html-theme-ref
+++ b/vendor/html-theme-ref
@@ -1 +1 @@
-Subproject commit 21e57f732a5d9fcd6b53f701a7b703979cd20251
+Subproject commit ed3fb63b0cce6918d6bfef93276c3c908f04f3ae