diff --git a/Iyokan b/Iyokan
index a88c42e..97f4797 160000
--- a/Iyokan
+++ b/Iyokan
@@ -1 +1 @@
-Subproject commit a88c42e02ed475b301823bb7aa24554fc0a34a8f
+Subproject commit 97f4797d7ddeb685ab0c50321fa1919f26f78f2e