diff --git a/Dockerfile b/Dockerfile
index 0c8167b..90695bb 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM ruby:3.4.8
+FROM ruby:4.0.1
 RUN apt-get update -qq && apt-get install -y build-essential libpq-dev
 
 RUN mkdir -p /app