diff --git a/.devcontainer/Dockerfile b/.devcontainer/Dockerfile
index 6c95720..e650527 100644
--- a/.devcontainer/Dockerfile
+++ b/.devcontainer/Dockerfile
@@ -1,3 +1,3 @@
 # Make sure RUBY_VERSION matches the Ruby version in .ruby-version
-ARG RUBY_VERSION=3.3.6
+ARG RUBY_VERSION=3.4.1
 FROM ghcr.io/rails/devcontainer/images/ruby:$RUBY_VERSION
diff --git a/.ruby-version b/.ruby-version
index 9c25013..47b322c 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-3.3.6
+3.4.1
diff --git a/Gemfile.lock b/Gemfile.lock
index 99ae93d..188e7df 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -313,4 +313,4 @@ DEPENDENCIES
   web-console
 
 BUNDLED WITH
-   2.5.22
+   2.6.2