diff --git a/_includes/HakkenDates.tsx b/_includes/HakkenDates.tsx
index a761596..95f7bcf 100644
--- a/_includes/HakkenDates.tsx
+++ b/_includes/HakkenDates.tsx
@@ -16,7 +16,7 @@ const getStartAndEnd = (date) => {
     Winter: 1,
     Spring: 4,
     Summer: 7,
-    Autumn: 11,
+    Autumn: 10,
   }[version];
 
   if (date.override_date) {