diff --git a/_tips/developing.ja.md b/_tips/developing.ja.md
index d09ee99..87cd6fa 100644
--- a/_tips/developing.ja.md
+++ b/_tips/developing.ja.md
@@ -6,7 +6,7 @@ title: "ウェブ・アクセシビリティのための開発 – 始めるに
 title_html: "ウェブ・アクセシビリティのための開発"
 nav_title: "始めるにあたってのヒント"
 lang: ja  # Change "en" to the translated-language shortcode
-last_updated: 2024-03-31   # Put the date of this translation YYYY-MM-DD (with month in the middle)
+last_updated: 2024-04-16   # Put the date of this translation YYYY-MM-DD (with month in the middle)
 
 resource:
   ref: /tips/