diff --git a/.ruby-version b/.ruby-version
index 03463f3..4a85a55 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-ruby-3.3.0
+ruby-3.3.1
diff --git a/Dockerfile b/Dockerfile
index d18898b..74c54f1 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,7 +1,7 @@
 # syntax = docker/dockerfile:1
 
 # Make sure RUBY_VERSION matches the Ruby version in .ruby-version and Gemfile
-ARG RUBY_VERSION=3.3.0
+ARG RUBY_VERSION=3.3.1
 FROM registry.docker.com/library/ruby:$RUBY_VERSION-slim as base
 
 # Rails app lives here
diff --git a/Gemfile b/Gemfile
index 9f66c4a..e97a8da 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,6 +1,6 @@
 source "https://rubygems.org"
 
-ruby "3.3.0"
+ruby file: "./.ruby-version"
 
 gem "rails", "~> 7.1.3", ">= 7.1.3.2"
 gem "sprockets-rails"
diff --git a/Gemfile.lock b/Gemfile.lock
index 59cdd87..8b99152 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -308,7 +308,7 @@ DEPENDENCIES
   web-console
 
 RUBY VERSION
-   ruby 3.3.0p0
+   ruby 3.3.1p55
 
 BUNDLED WITH
    2.5.3