diff --git a/docs/themes/hugo-book b/docs/themes/hugo-book
index 317ccae..3f1bccc 160000
--- a/docs/themes/hugo-book
+++ b/docs/themes/hugo-book
@@ -1 +1 @@
-Subproject commit 317ccae23b73f5e49d7341ad57227bd64a89ab38
+Subproject commit 3f1bcccbfb247da44ab5410a97576c0bf6da103b