diff --git a/.ruby-version b/.ruby-version
index ff365e0..47b322c 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-3.1.3
+3.4.1
diff --git a/Dockerfile b/Dockerfile
index 1a84ca5..4be4941 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM ruby:3.1.3
+FROM ruby:3.3.6
 ENV LANG C.UTF-8
 
 RUN apt update -qq && apt install -y build-essential libpq-dev
diff --git a/Gemfile b/Gemfile
index 0d12fd6..4161411 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,7 +1,7 @@
 source 'https://rubygems.org'
 git_source(:github) { |repo| "https://github.com/#{repo}.git" }
 
-ruby '3.1.3'
+ruby '3.4.1'
 
 gem 'bootsnap', require: false
 gem 'bugsnag'