diff --git a/.ruby-version b/.ruby-version
index 49cdd668e..ef538c281 100644
--- a/.ruby-version
+++ b/.ruby-version
@@ -1 +1 @@
-2.7.6
+3.1.2
diff --git a/Dockerfile b/Dockerfile
index 33788b286..b83d092a0 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,5 +1,5 @@
-ARG base_image=ghcr.io/alphagov/govuk-ruby-base:2.7.6
-ARG builder_image=ghcr.io/alphagov/govuk-ruby-builder:2.7.6
+ARG base_image=ghcr.io/alphagov/govuk-ruby-base:3.1.2
+ARG builder_image=ghcr.io/alphagov/govuk-ruby-builder:3.1.2
 
 FROM $builder_image AS builder
 
diff --git a/Gemfile b/Gemfile
index 1b95cce60..0fd167df6 100644
--- a/Gemfile
+++ b/Gemfile
@@ -13,6 +13,7 @@ gem "plek"
 gem "rack_strip_client_ip"
 gem "rails-controller-testing"
 gem "rails-i18n"
+gem "rss"
 gem "sassc-rails"
 gem "slimmer"
 gem "sprockets-rails"
diff --git a/Gemfile.lock b/Gemfile.lock
index a0f8807c2..941440b3d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -285,6 +285,8 @@ GEM
       netrc (~> 0.8)
     rexml (3.2.5)
     rouge (4.0.0)
+    rss (0.2.9)
+      rexml
     rubocop (1.35.0)
       json (~> 2.3)
       parallel (~> 1.10)
@@ -412,6 +414,7 @@ DEPENDENCIES
   rails-controller-testing
   rails-i18n
   rails_translation_manager
+  rss
   rubocop-govuk
   sassc-rails
   simplecov
@@ -422,4 +425,4 @@ DEPENDENCIES
   webmock
 
 BUNDLED WITH
-   2.1.4
+   2.3.22
diff --git a/app/presenters/contact_presenter.rb b/app/presenters/contact_presenter.rb
index 17c0d26c1..31c4f109d 100644
--- a/app/presenters/contact_presenter.rb
+++ b/app/presenters/contact_presenter.rb
@@ -118,7 +118,7 @@ def phone_numbers_in_group(group)
 
   def v_card_part(v_card_class, value)
     {
-      v_card_class: v_card_class,
+      v_card_class:,
       value: value.try(:strip).try(:html_safe),
     }
   end
diff --git a/app/presenters/content_item/corporate_information_groups.rb b/app/presenters/content_item/corporate_information_groups.rb
index 951d9bbf4..9c7204de9 100644
--- a/app/presenters/content_item/corporate_information_groups.rb
+++ b/app/presenters/content_item/corporate_information_groups.rb
@@ -44,7 +44,7 @@ def further_information_link(type)
 
     def further_information_about(type)
       link = further_information_link(type)
-      I18n.t("corporate_information_page.#{type}_html", link: link) if link
+      I18n.t("corporate_information_page.#{type}_html", link:) if link
     end
 
     def corporate_information_heading
diff --git a/app/presenters/content_item/manual.rb b/app/presenters/content_item/manual.rb
index 1963c660c..b2a92cf89 100644
--- a/app/presenters/content_item/manual.rb
+++ b/app/presenters/content_item/manual.rb
@@ -8,9 +8,9 @@ def page_title
       title += " - " if title.present?
 
       if hmrc?
-        I18n.t("manuals.hmrc_title", title: title)
+        I18n.t("manuals.hmrc_title", title:)
       else
-        I18n.t("manuals.title", title: title)
+        I18n.t("manuals.title", title:)
       end
     end
     alias_method :manual_page_title, :page_title
@@ -29,7 +29,7 @@ def body
 
     def manual_metadata
       {
-        from: from,
+        from:,
         first_published: published,
         other: other_metadata,
         inverse: true,
diff --git a/app/presenters/content_item/metadata.rb b/app/presenters/content_item/metadata.rb
index 635d1885f..dfb1c2a07 100644
--- a/app/presenters/content_item/metadata.rb
+++ b/app/presenters/content_item/metadata.rb
@@ -5,11 +5,11 @@ module Metadata
 
     def metadata
       {
-        from: from,
+        from:,
         first_published: published,
         last_updated: updated,
         see_updates_link: true,
-        part_of: part_of,
+        part_of:,
         direction: text_direction,
         other: {},
       }
@@ -21,7 +21,7 @@ def important_metadata
 
     def publisher_metadata
       {
-        from: from,
+        from:,
         first_published: published,
         last_updated: updated,
         see_updates_link: true,
diff --git a/app/presenters/content_item/title_and_context.rb b/app/presenters/content_item/title_and_context.rb
index 44f17a4bc..d217ed0c1 100644
--- a/app/presenters/content_item/title_and_context.rb
+++ b/app/presenters/content_item/title_and_context.rb
@@ -2,7 +2,7 @@ module ContentItem
   module TitleAndContext
     def title_and_context
       {
-        title: title,
+        title:,
         context: I18n.t("content_item.schema_name.#{document_type}", count: 1),
         context_locale: view_context.t_locale_fallback("content_item.schema_name.#{document_type}", count: 1),
         average_title_length: "long",
diff --git a/app/presenters/content_item/withdrawable.rb b/app/presenters/content_item/withdrawable.rb
index c0733e09d..f032db485 100644
--- a/app/presenters/content_item/withdrawable.rb
+++ b/app/presenters/content_item/withdrawable.rb
@@ -41,7 +41,7 @@ def withdrawal_notice_time
     end
 
     def english_display_date(timestamp, format = "%-d %B %Y")
-      I18n.l(Time.zone.parse(timestamp), format: format, locale: :en) if timestamp
+      I18n.l(Time.zone.parse(timestamp), format:, locale: :en) if timestamp
     end
   end
 end
diff --git a/app/presenters/content_item_presenter.rb b/app/presenters/content_item_presenter.rb
index 024a996fd..c4e7e3396 100644
--- a/app/presenters/content_item_presenter.rb
+++ b/app/presenters/content_item_presenter.rb
@@ -111,7 +111,7 @@ def voting_is_open?
   end
 
   def display_date(timestamp, format = "%-d %B %Y")
-    I18n.l(Time.zone.parse(timestamp), format: format, locale: "en") if timestamp
+    I18n.l(Time.zone.parse(timestamp), format:, locale: "en") if timestamp
   end
 
   def sorted_locales(translations)
@@ -135,6 +135,6 @@ def text_direction
   end
 
   def native_language_name_for(locale)
-    I18n.t("language_names.#{locale}", locale: locale)
+    I18n.t("language_names.#{locale}", locale:)
   end
 end
diff --git a/app/presenters/travel_advice_presenter.rb b/app/presenters/travel_advice_presenter.rb
index 719003603..da47c9eac 100644
--- a/app/presenters/travel_advice_presenter.rb
+++ b/app/presenters/travel_advice_presenter.rb
@@ -23,7 +23,7 @@ def metadata
     other["Latest update"] = view_context.simple_format(latest_update, { class: "metadata__update" }, wrapper_tag: "span") if latest_update.present?
 
     {
-      other: other,
+      other:,
     }
   end
 
diff --git a/test/component_test_helper.rb b/test/component_test_helper.rb
index 9ade067de..457c3d30f 100644
--- a/test/component_test_helper.rb
+++ b/test/component_test_helper.rb
@@ -8,6 +8,6 @@ def component_name
   end
 
   def render_component(locals)
-    render partial: "components/#{component_name}", locals: locals
+    render partial: "components/#{component_name}", locals:
   end
 end
diff --git a/test/controllers/content_items_controller_test.rb b/test/controllers/content_items_controller_test.rb
index dfb26a396..69993e8cc 100644
--- a/test/controllers/content_items_controller_test.rb
+++ b/test/controllers/content_items_controller_test.rb
@@ -255,9 +255,9 @@ class ContentItemsControllerTest < ActionController::TestCase
   test "renders translated content items in their locale" do
     content_item = content_store_has_schema_example("case_study", "translated")
     locale = content_item["locale"]
-    translated_schema_name = I18n.t("content_item.schema_name.case_study", count: 1, locale: locale)
+    translated_schema_name = I18n.t("content_item.schema_name.case_study", count: 1, locale:)
 
-    get :show, params: { path: path_for(content_item, locale), locale: locale }
+    get :show, params: { path: path_for(content_item, locale), locale: }
 
     assert_response :success
     assert_select "title", %r{#{translated_schema_name}}
@@ -296,7 +296,7 @@ class ContentItemsControllerTest < ActionController::TestCase
 
     stub_content_store_does_not_have_item("/#{path}")
 
-    get :show, params: { path: path }
+    get :show, params: { path: }
     assert_response :not_found
   end
 
@@ -305,7 +305,7 @@ class ContentItemsControllerTest < ActionController::TestCase
 
     stub_content_store_does_not_have_item("/#{path}")
 
-    get :show, params: { path: path }
+    get :show, params: { path: }
     assert_response :not_found
   end
 
@@ -317,7 +317,7 @@ class ContentItemsControllerTest < ActionController::TestCase
 
     stub_content_store_has_item("/#{path}", content_item)
 
-    get :show, params: { path: path }
+    get :show, params: { path: }
     assert_response :not_found
   end
 
@@ -326,7 +326,7 @@ class ContentItemsControllerTest < ActionController::TestCase
     url = "#{content_store_endpoint}/content/#{path}"
     stub_request(:get, url).to_return(status: 403, headers: {})
 
-    get :show, params: { path: path }
+    get :show, params: { path: }
     assert_response :forbidden
   end
 
diff --git a/test/controllers/get_involved_controller_test.rb b/test/controllers/get_involved_controller_test.rb
index 9144ec461..8d707b3b7 100644
--- a/test/controllers/get_involved_controller_test.rb
+++ b/test/controllers/get_involved_controller_test.rb
@@ -62,7 +62,7 @@ def setup
       title = "Next closing consultation on time zones"
       stub_search_query(query: hash_including(filter_content_store_document_type: "open_consultation",
                                               filter_end_date: "from: #{Time.zone.now.to_date}"),
-                        response: { "results" => [consultation_result(title: title)] })
+                        response: { "results" => [consultation_result(title:)] })
 
       get :show
       assert_select ".gem-c-inset-text", /#{title}/
@@ -72,7 +72,7 @@ def setup
   test "showing recently opened consultations" do
     title = "Open consultation on time zones"
     stub_search_query(query: hash_including(filter_content_store_document_type: "open_consultation"),
-                      response: { "results" => [consultation_result(title: title)] })
+                      response: { "results" => [consultation_result(title:)] })
 
     get :show
     assert response.body.include?(title)
@@ -81,7 +81,7 @@ def setup
   test "showing recent consultation outcomes" do
     title = "Consultation outcome on time zones"
     stub_search_query(query: hash_including(filter_content_store_document_type: "consultation_outcome"),
-                      response: { "results" => [consultation_result(title: title)] })
+                      response: { "results" => [consultation_result(title:)] })
 
     get :show
     assert response.body.include?(title)
@@ -97,7 +97,7 @@ def setup
 
   def stub_search_query(query:, response:)
     stub_request(:get, /\A#{Plek.new.find('search')}\/search.json/)
-      .with(query: query)
+      .with(query:)
       .to_return(body: response.to_json)
   end
 
diff --git a/test/controllers/service_sign_in_content_item_controller_test.rb b/test/controllers/service_sign_in_content_item_controller_test.rb
index 7f8a2ea0e..5f649697f 100644
--- a/test/controllers/service_sign_in_content_item_controller_test.rb
+++ b/test/controllers/service_sign_in_content_item_controller_test.rb
@@ -35,7 +35,7 @@ class ContentItemsControllerTest < ActionController::TestCase
 
     stub_request(:get, %r{#{path}}).to_return(status: 200, body: content_item.to_json, headers: {})
 
-    get :show, params: { path: path }
+    get :show, params: { path: }
 
     assert_template :service_sign_in
   end
@@ -46,14 +46,14 @@ class ContentItemsControllerTest < ActionController::TestCase
 
     stub_request(:get, %r{#{path}}).to_return(status: 200, body: content_item.to_json, headers: {})
 
-    get :show, params: { path: path }
+    get :show, params: { path: }
 
     assert_template :service_sign_in
   end
 
   test "raises a 404 for a content item which isn't a service_sign_in page" do
     path = "this/is/not/a/sign/in/page"
-    post :service_sign_in_options, params: { path: path }
+    post :service_sign_in_options, params: { path: }
     assert_response :not_found
   end
 
@@ -67,7 +67,7 @@ class ContentItemsControllerTest < ActionController::TestCase
 
     stub_request(:get, %r{#{path}}).to_return(status: 200, body: content_item.to_json, headers: {})
 
-    post :service_sign_in_options, params: { path: path, option: value }
+    post :service_sign_in_options, params: { path:, option: value }
 
     assert_response :redirect
     assert_redirected_to link
@@ -79,7 +79,7 @@ class ContentItemsControllerTest < ActionController::TestCase
 
     stub_request(:get, %r{#{path}}).to_return(status: 200, body: content_item.to_json, headers: {})
 
-    post :service_sign_in_options, params: { path: path }
+    post :service_sign_in_options, params: { path: }
 
     assert_not_nil @controller.instance_variable_get(:@error)
     assert_template :service_sign_in
@@ -93,7 +93,7 @@ class ContentItemsControllerTest < ActionController::TestCase
 
     stub_request(:get, %r{#{path}}).to_return(status: 200, body: content_item.to_json, headers: {})
 
-    post :service_sign_in_options, params: { path: path, option: option }
+    post :service_sign_in_options, params: { path:, option: }
 
     assert_not_nil @controller.instance_variable_get(:@error)
     assert_template :service_sign_in
@@ -112,7 +112,7 @@ class ContentItemsControllerTest < ActionController::TestCase
 
     stub_request(:get, %r{#{path}}).to_return(status: 200, body: content_item.to_json, headers: {})
 
-    post :service_sign_in_options, params: { path: path, _ga: "1.1111111.1111111.111111111", option: value }
+    post :service_sign_in_options, params: { path:, _ga: "1.1111111.1111111.111111111", option: value }
 
     assert_response :redirect
     assert_redirected_to "https://www.horse.service.gov.uk/account?horse=brown&_ga=1.1111111.1111111.111111111"
diff --git a/test/controllers/step_navigation_controller_test.rb b/test/controllers/step_navigation_controller_test.rb
index 2a821ee48..9ab5cbbe1 100644
--- a/test/controllers/step_navigation_controller_test.rb
+++ b/test/controllers/step_navigation_controller_test.rb
@@ -13,7 +13,7 @@ class ContentItemsControllerTest < ActionController::TestCase
 
       @controller.stubs(:page_in_scope?).returns(false)
 
-      get :show, params: { path: path }
+      get :show, params: { path: }
 
       assert_response 200
       assert response.body.include?("Learn to drive a car: step by step")
@@ -28,7 +28,7 @@ class ContentItemsControllerTest < ActionController::TestCase
 
       @controller.stubs(:page_in_scope?).returns(false)
 
-      get :show, params: { path: path }
+      get :show, params: { path: }
 
       assert_response 200
       assert_not response.body.include?("Learn to drive a car: step by step")
diff --git a/test/integration/specialist_document_test.rb b/test/integration/specialist_document_test.rb
index cab3b6938..3b2bd5edd 100644
--- a/test/integration/specialist_document_test.rb
+++ b/test/integration/specialist_document_test.rb
@@ -139,7 +139,7 @@ def assert_nested_content_item(heading)
 
     if heading_level < 4
       assert page.has_css?(selector), "Failed to find an element matching: #{selector}"
-      assert page.has_css?(selector, text: text), "Failed to find an element matching #{selector} with text: #{text}"
+      assert page.has_css?(selector, text:), "Failed to find an element matching #{selector} with text: #{text}"
     else
       assert_not page.has_css?(selector), "Found a nested heading too deep, there should be no element matching: #{selector}"
     end
diff --git a/test/support/govuk_content_schema_examples.rb b/test/support/govuk_content_schema_examples.rb
index 8e823ed26..ba8808216 100644
--- a/test/support/govuk_content_schema_examples.rb
+++ b/test/support/govuk_content_schema_examples.rb
@@ -26,7 +26,7 @@ def content_store_has_schema_example(schema_name, example_name)
   end
 
   def govuk_content_schema_example(schema_name, example_name)
-    GovukSchemas::Example.find(schema_name, example_name: example_name)
+    GovukSchemas::Example.find(schema_name, example_name:)
   end
 
   module ClassMethods
diff --git a/test/test_helper.rb b/test/test_helper.rb
index 88c81cb77..ffa1c2f85 100644
--- a/test/test_helper.rb
+++ b/test/test_helper.rb
@@ -76,7 +76,7 @@ def assert_has_contents_list(contents)
         selector = "a[href=\"##{heading[:id]}\"]"
         text = heading.fetch(:text)
         assert page.has_css?(selector), "Failed to find an element matching: #{selector}"
-        assert page.has_css?(selector, text: text), "Failed to find an element matching #{selector} with text: #{text}"
+        assert page.has_css?(selector, text:), "Failed to find an element matching #{selector} with text: #{text}"
       end
     end
   end
@@ -105,7 +105,7 @@ def assert_has_metadata(any_args, extra_metadata_classes: nil)
         value = { value => nil } if value.is_a?(String)
         value.each do |text, href|
           if href
-            assert page.has_link?(text, href: href), "Metadata text '#{text} with link of #{href}' not found"
+            assert page.has_link?(text, href:), "Metadata text '#{text} with link of #{href}' not found"
           else
             assert page.has_text?(text), "Metadata value '#{text}' not found"
           end
@@ -120,9 +120,9 @@ def assert_has_metadata_local(metadata, term_selector, definition_selector)
              "Metadata term '#{key}' not found"
       value = { value => nil } if value.is_a?(String)
       value.each do |text, href|
-        within(definition_selector, text: text) do
+        within(definition_selector, text:) do
           if href
-            assert page.has_link?(text, href: href), "Metadata link '#{text}' not found"
+            assert page.has_link?(text, href:), "Metadata link '#{text}' not found"
           else
             assert page.has_text?(text), "Metadata value '#{text}' not found"
           end
@@ -156,7 +156,7 @@ def assert_has_devolved_nations_component(text, nations = nil)
   end
 
   def assert_footer_has_published_dates(first_published = nil, last_updated = nil, history_link: false)
-    assert_has_published_dates(first_published, last_updated, history_link: history_link)
+    assert_has_published_dates(first_published, last_updated, history_link:)
   end
 
   def setup_and_visit_content_item(name, parameter_string = "")