diff --git a/.ruby-version b/.ruby-version
index a07bf72..753ec9c 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-ruby-3.4.2
+ruby-3.4.3
diff --git a/Dockerfile b/Dockerfile
index e15f2f4..56042e5 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=3.4.2
+ARG RUBY_VERSION=3.4.3
 FROM registry.docker.com/library/ruby:$RUBY_VERSION-slim AS base
 
 # Rails app lives here
diff --git a/Dockerfile.dev b/Dockerfile.dev
index a13a506..f2a82ba 100644
--- a/Dockerfile.dev
+++ b/Dockerfile.dev
@@ -1,7 +1,7 @@
 # syntax = docker/dockerfile:1
 
 # Make sure RUBY_VERSION matches the Ruby version in .ruby-version and Gemfile
-ARG RUBY_VERSION=3.4.2
+ARG RUBY_VERSION=3.4.3
 FROM registry.docker.com/library/ruby:$RUBY_VERSION-slim as base
 
 # Rails app lives here
diff --git a/Gemfile b/Gemfile
index 87e3600..e0e1d14 100644
--- a/Gemfile
+++ b/Gemfile
@@ -2,7 +2,7 @@
 
 source 'https://rubygems.org'
 
-ruby '3.4.2'
+ruby '3.4.3'
 gem 'bootsnap', require: false
 gem 'csv'
 gem 'importmap-rails'
diff --git a/Gemfile.lock b/Gemfile.lock
index acd521e..685eac4 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -634,7 +634,7 @@ CHECKSUMS
   zeitwerk (2.7.3) sha256=b2e86b4a9b57d26ba68a15230dcc7fe6f040f06831ce64417b0621ad96ba3e85
 
 RUBY VERSION
-   ruby 3.4.2p28
+   ruby 3.4.3p32
 
 BUNDLED WITH
    2.6.1