diff --git a/Dockerfile b/Dockerfile
index c1ff0d5e..57a5ad08 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM ruby:3.4.7 AS base
+FROM ruby:4.0.0 AS base
 
 RUN bundle config set frozen 'true' && \
     bundle config set path '/vendor/bundle'