diff --git a/.devcontainer/devcontainer.json b/.devcontainer/devcontainer.json
index c3f10e1..0821d61 100644
--- a/.devcontainer/devcontainer.json
+++ b/.devcontainer/devcontainer.json
@@ -1,6 +1,6 @@
 {
   "name": "microcms-ruby-sdk",
-  "image": "ghcr.io/rails/devcontainer/images/ruby:4.0.5",
+  "image": "ghcr.io/rails/devcontainer/images/ruby:4.0.6",
   "postCreateCommand": "bin/setup",
   "customizations": {
     "vscode": {
diff --git a/.ruby-version b/.ruby-version
index 7636e75..d13e837 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-4.0.5
+4.0.6
diff --git a/Gemfile b/Gemfile
index 5ed89d6..5f9b237 100644
--- a/Gemfile
+++ b/Gemfile
@@ -5,8 +5,8 @@ source 'https://rubygems.org'
 # Specify your gem's dependencies in microcms.gemspec
 gemspec
 
-gem 'rake', '~> 12.0'
+gem 'rake', '~> 13.4'
 
-gem 'rubocop', '~> 1.81', require: false
+gem 'rubocop', '~> 1.90', require: false
 
 gem 'rspec', '~> 3.13', require: false