diff --git a/slides-markdown/themes/reveal-hugo b/slides-markdown/themes/reveal-hugo
index 3a86d7dc..de9ca33d 160000
--- a/slides-markdown/themes/reveal-hugo
+++ b/slides-markdown/themes/reveal-hugo
@@ -1 +1 @@
-Subproject commit 3a86d7dc867b8b99409708da210b8d815e238a69
+Subproject commit de9ca33dfdce50bf7d777c0343d616daf03be21b