diff --git a/.github/workflows/docker.yml b/.github/workflows/docker.yml
index 9c3f049ff53..462358ee7d7 100644
--- a/.github/workflows/docker.yml
+++ b/.github/workflows/docker.yml
@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-18.04
     env:
       RUBYGEMS_VERSION: 3.2.3
-      RUBY_VERSION: 2.7.4
+      RUBY_VERSION: 3.0.2
     steps:
     - uses: actions/checkout@v2
     - name: Set up Docker Buildx
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 7b6fd342079..a0a833e67c8 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -10,7 +10,7 @@ jobs:
       fail-fast: false
       matrix:
         rubygems_version: ['3.2.3', 'latest']
-        ruby_version: ['2.7.4']
+        ruby_version: ['3.0.2']
     name: Rails tests (Ruby ${{ matrix.ruby_version }}, RubyGems ${{ matrix.rubygems_version }})
     runs-on: ubuntu-18.04
     env:
diff --git a/.ruby-version b/.ruby-version
index 74500cee168..d9c62ed9233 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-2.7.4
\ No newline at end of file
+3.0.2
\ No newline at end of file
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 9fb6a64fe38..e626ada8011 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -63,7 +63,7 @@ Follow the instructions below on how to install Bundler and setup the database.
 
 #### Environment (OS X)
 
-* Use Ruby 2.6.x (`.ruby-version` is present and can be used)
+* Use R Ruby 3.0.x (`.ruby-version` is present and can be used)
 * Use Rubygems 3.2.3
 * Install bundler: `gem install bundler`
 * Install Elastic Search:
@@ -82,7 +82,7 @@ Follow the instructions below on how to install Bundler and setup the database.
 
 #### Environment (Linux - Debian/Ubuntu)
 
-* Use Ruby 2.6.x `apt-get install ruby2.6`
+* Use Ruby 3.0.x `apt-get install ruby3.0`
   * Or install via [alternate methods](https://www.ruby-lang.org/en/downloads/)
 * Use Rubygems 3.2.3
 * Install bundler: `gem install bundler`
diff --git a/Dockerfile b/Dockerfile
index 228ad588dba..2fef2f84c6f 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,4 +1,4 @@
-FROM ruby:2.7-alpine as build
+FROM ruby:3.0-alpine as build
 
 ARG RUBYGEMS_VERSION
 
@@ -36,7 +36,7 @@ RUN bundle config set --local without 'development test assets' && \
   bundle clean --force
 
 
-FROM ruby:2.7-alpine
+FROM ruby:3.0-alpine
 
 ARG RUBYGEMS_VERSION
 
diff --git a/app/controllers/application_controller.rb b/app/controllers/application_controller.rb
index e204ae7fdaf..2a506daff64 100644
--- a/app/controllers/application_controller.rb
+++ b/app/controllers/application_controller.rb
@@ -23,16 +23,16 @@ def set_locale
     render plain: "Request is missing param '#{e.param}'", status: :bad_request
   end
 
-  def self.http_basic_authenticate_with(options = {})
+  def self.http_basic_authenticate_with(**options)
     before_action(options.except(:name, :password, :realm)) do
-      raise "Invalid authentication options" unless http_basic_authentication_options_valid?(options)
+      raise "Invalid authentication options" unless http_basic_authentication_options_valid?(**options)
     end
     super
   end
 
   protected
 
-  def http_basic_authentication_options_valid?(options)
+  def http_basic_authentication_options_valid?(**options)
     options[:password].present? && options[:name].present?
   end
 
diff --git a/config/initializers/session_store.rb b/config/initializers/session_store.rb
index c3067d97680..28c03b11a72 100644
--- a/config/initializers/session_store.rb
+++ b/config/initializers/session_store.rb
@@ -5,8 +5,7 @@
 
 # Be sure to restart your server when you modify this file.
 
-options = { key: '_rubygems_session' }
-Rails.application.config.session_store :cookie_store, options
+Rails.application.config.session_store :cookie_store, key: '_rubygems_session'
 
 # Use the database for sessions instead of the cookie-based default,
 # which shouldn't be used to store highly confidential information
diff --git a/test/functional/api/v1/versions_controller_test.rb b/test/functional/api/v1/versions_controller_test.rb
index 42996e85d65..fa021edf523 100644
--- a/test/functional/api/v1/versions_controller_test.rb
+++ b/test/functional/api/v1/versions_controller_test.rb
@@ -9,8 +9,8 @@ def get_latest(rubygem, format = "json")
     get :latest, params: { id: rubygem.name, format: format }
   end
 
-  def get_reverse_dependencies(rubygem, options = { format: "json" })
-    get :reverse_dependencies, options.merge(params: { id: rubygem.name })
+  def get_reverse_dependencies(rubygem, format: "json")
+    get :reverse_dependencies, params: { id: rubygem.name, format: format }
   end
 
   def set_cache_header