diff --git a/docs/index.ja.md b/docs/index.ja.md
index a4f7682..0dd5f90 100644
--- a/docs/index.ja.md
+++ b/docs/index.ja.md
@@ -1,4 +1,4 @@
-# Japan Automotive AI Challenge 20XX
+# Japan Automotive AI Challenge 2024
 
 ## コンセプト