diff --git a/themes/hugo-book b/themes/hugo-book
index 036e037..d86d5e7 160000
--- a/themes/hugo-book
+++ b/themes/hugo-book
@@ -1 +1 @@
-Subproject commit 036e037a63ba06ca366adb1a0c3a005d1a0b15b8
+Subproject commit d86d5e70c7c0d787675b13d9aee749c1a8b34776