diff --git a/.ruby-version b/.ruby-version
index fefb2b7..6d5369b 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-ruby-3.3.3
+ruby-3.3.4
diff --git a/Dockerfile b/Dockerfile
index eba01ff..af641b5 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,8 +1,8 @@
 # syntax = docker/dockerfile:1
 
 # Make sure RUBY_VERSION matches the Ruby version in .ruby-version and Gemfile
-ARG RUBY_VERSION=3.3.3
-FROM registry.docker.com/library/ruby:$RUBY_VERSION-slim as base
+ARG RUBY_VERSION=3.3.4
+FROM registry.docker.com/library/ruby:$RUBY_VERSION-slim AS base
 
 # Rails app lives here
 WORKDIR /rails
@@ -15,7 +15,7 @@ ENV RAILS_ENV="production" \
 
 
 # Throw-away build stage to reduce size of final image
-FROM base as build
+FROM base AS build
 
 # Install packages needed to build gems
 RUN apt-get update -qq && \
diff --git a/Gemfile b/Gemfile
index 38a1c92..c4c194a 100644
--- a/Gemfile
+++ b/Gemfile
@@ -2,7 +2,7 @@
 
 source 'https://rubygems.org'
 
-ruby '3.3.3'
+ruby '3.3.4'
 
 # Rails itself :)
 gem 'rails', '~> 7.1.3'
diff --git a/Gemfile.lock b/Gemfile.lock
index 1948831..86d15cb 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -187,7 +187,7 @@ GEM
     puma (6.4.2)
       nio4r (~> 2.0)
     racc (1.8.0)
-    rack (3.1.4)
+    rack (3.1.7)
     rack-session (2.0.0)
       rack (>= 3.0.0)
     rack-test (2.1.0)
@@ -345,7 +345,7 @@ DEPENDENCIES
   web-console
 
 RUBY VERSION
-   ruby 3.3.3p89
+   ruby 3.3.4p94
 
 BUNDLED WITH
-   2.5.9
+   2.5.15