diff --git a/.ruby-version b/.ruby-version
index 0ddaf4d..593162e 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-~> 3.3
+~> 3.4
diff --git a/Dockerfile b/Dockerfile
index 802d988..dddf3fb 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM ruby:3.3-slim AS base
+FROM ruby:3.4-slim AS base
 
 # Configure users and groups
 RUN groupadd -g 40054 alma && \
@@ -9,7 +9,7 @@ RUN groupadd -g 40054 alma && \
 
 # Install packages common to dev/prod
 RUN apt-get -y update -qq && \
-    gem install bundler --version 2.5.22
+    gem install bundler --version 4.0.15
 
 # Ignore the system's platform and only install native Ruby versions
 ENV BUNDLE_FORCE_RUBY_PLATFORM=true
diff --git a/Gemfile.lock b/Gemfile.lock
index 195650a..74df084 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -70,7 +70,7 @@ DEPENDENCIES
   thor (~> 1.1)
 
 RUBY VERSION
-  ruby 3.3.11
+  ruby 3.4.10
 
 BUNDLED WITH
-  4.0.9
+  4.0.15