From 8d54ac6d948c0dd8878da8dc0841c026f1c02a2a Mon Sep 17 00:00:00 2001
From: Shinichi Maeshima <netwillnet@gmail.com>
Date: Fri, 27 Mar 2026 18:35:06 +0900
Subject: [PATCH] Upgrade devcontainers image to Ruby4.0

---
 .devcontainer/docker-compose.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.devcontainer/docker-compose.yml b/.devcontainer/docker-compose.yml
index daf07a7..692f1e9 100644
--- a/.devcontainer/docker-compose.yml
+++ b/.devcontainer/docker-compose.yml
@@ -1,6 +1,6 @@
 services:
   app:
-    image: mcr.microsoft.com/devcontainers/ruby:1-3.4-bookworm
+    image: mcr.microsoft.com/devcontainers/ruby:4.0-bookworm
     volumes:
       - ..:/workspaces/seed-do:cached
     command: sleep infinity