diff --git a/README.md b/README.md
index 1acca8234b..dfbc303204 100644
--- a/README.md
+++ b/README.md
@@ -18,7 +18,7 @@ Using Bundler:
 
 ```ruby
 group :development do
-  gem 'brakeman'
+  gem 'brakeman', require: false
 end
 ```
 
diff --git a/docs/warning_types/command_injection/index.markdown b/docs/warning_types/command_injection/index.markdown
index a342621216..20ed03eae4 100644
--- a/docs/warning_types/command_injection/index.markdown
+++ b/docs/warning_types/command_injection/index.markdown
@@ -10,4 +10,8 @@ There are many ways to run commands in Ruby:
 
 Brakeman will warn on any method like these that uses user input or unsafely interpolates variables.
 
+You can use [`shellescape`](https://apidock.com/ruby/Shellwords/shellescape) to render a variable safe:
+
+    `ls #{params[:file].shellescape}`
+
 See [the Ruby Security Guide](http://guides.rubyonrails.org/security.html#command-line-injection) for details.
diff --git a/gem_common.rb b/gem_common.rb
index bd3159a76f..38e3da2d10 100644
--- a/gem_common.rb
+++ b/gem_common.rb
@@ -1,6 +1,7 @@
 module Brakeman
   module GemDependencies
     def self.dev_dependencies spec
+      spec.add_development_dependency "csv"
       spec.add_development_dependency "minitest"
       spec.add_development_dependency "minitest-ci"
       spec.add_development_dependency "simplecov"
diff --git a/lib/brakeman/checks/check_session_settings.rb b/lib/brakeman/checks/check_session_settings.rb
index f117eadb88..cbd1424b0f 100644
--- a/lib/brakeman/checks/check_session_settings.rb
+++ b/lib/brakeman/checks/check_session_settings.rb
@@ -118,7 +118,7 @@ def check_secrets_yaml
       yaml = secrets_file.read
       require 'yaml'
       begin
-        secrets = YAML.safe_load yaml
+        secrets = YAML.safe_load yaml, aliases: true
       rescue Psych::SyntaxError, RuntimeError => e
         Brakeman.notify "[Notice] #{self.class}: Unable to parse `#{secrets_file}`"
         Brakeman.debug "Failed to parse #{secrets_file}: #{e.inspect}"
diff --git a/lib/brakeman/options.rb b/lib/brakeman/options.rb
index 73428d572b..857db864fc 100644
--- a/lib/brakeman/options.rb
+++ b/lib/brakeman/options.rb
@@ -101,6 +101,15 @@ def create_option_parser options
           options[:rails7] = true
         end
 
+        opts.on "-8", "--rails8", "Force Rails 8 mode" do
+          options[:rails3] = true
+          options[:rails4] = true
+          options[:rails5] = true
+          options[:rails6] = true
+          options[:rails7] = true
+          options[:rails8] = true
+        end
+
         opts.separator ""
         opts.separator "Scanning options:"
 
diff --git a/lib/brakeman/parsers/slim_embedded.rb b/lib/brakeman/parsers/slim_embedded.rb
index a0970ce287..ceb730e89b 100644
--- a/lib/brakeman/parsers/slim_embedded.rb
+++ b/lib/brakeman/parsers/slim_embedded.rb
@@ -2,6 +2,7 @@
 module Slim
   class Embedded
     class TiltEngine
+      alias_method :on_slim_embedded, :on_slim_embedded # silence redefined method warning
       def on_slim_embedded(engine, body, attrs)
         # Override this method to avoid Slim trying to load sass/scss and failing
         case engine
@@ -22,6 +23,7 @@ def on_slim_embedded(engine, body, attrs)
     class SassEngine
       protected
 
+      alias_method :tilt_render, :tilt_render # silence redefined method warning
       def tilt_render(tilt_engine, tilt_options, text)
         [:dynamic,
          "BrakemanFilter.render(#{text.inspect}, #{self.class})"]
diff --git a/lib/brakeman/processors/alias_processor.rb b/lib/brakeman/processors/alias_processor.rb
index 4910670d1f..893328325c 100644
--- a/lib/brakeman/processors/alias_processor.rb
+++ b/lib/brakeman/processors/alias_processor.rb
@@ -665,7 +665,7 @@ def process_masgn exp
       exp[2] = exp[2][1]
     end
 
-    unless array? exp[1] and array? exp[2] and exp[1].length == exp[2].length
+    unless array? exp[1] and array? exp[2]
       return process_default(exp)
     end
 
@@ -678,21 +678,42 @@ def process_masgn exp
     # Call each assignment as if it is normal
     vars.each_with_index do |var, i|
       val = vals[i]
-      if val
+      next unless val # TODO: Break if there are no vals left?
 
-        # This happens with nested destructuring like
-        #   x, (a, b) = blah
-        if node_type? var, :masgn
-          # Need to add value to masgn exp
-          m = var.dup
-          m[2] = s(:to_ary, val)
+      # This happens with nested destructuring like
+      #   x, (a, b) = blah
+      if node_type? var, :masgn
+        # Need to add value to masgn exp
+        m = var.dup
+        m[2] = s(:to_ary, val)
 
-          process_masgn m
+        process_masgn m
+      elsif node_type? var, :splat
+        # Assign the rest of the values to the variable:
+        #
+        #   a, *b = 1, 2, 3
+        #
+        #   b == [2, 3]
+
+
+        assign = var[1].dup # var is s(:splat, s(:lasgn, :b))
+
+        if i == vars.length - 1 # Last variable being assigned, slurp up the rest
+          assign.rhs = s(:array, *vals[i..]) # val is the "rest" of the values
         else
-          assign = var.dup
-          assign.rhs = val
-          process assign
+          # Calculate how many values to assign based on how many variables
+          # there are.
+          #
+          # If there are more values than variables, the splat gets an empty array.
+
+          assign.rhs = s(:array, *vals[i, (vals.length - vars.length + 1)]).line(vals.line)
         end
+
+        process assign
+      else
+        assign = var.dup
+        assign.rhs = val
+        process assign
       end
     end
 
diff --git a/lib/brakeman/tracker/config.rb b/lib/brakeman/tracker/config.rb
index fb892be9ad..e4bc37d937 100644
--- a/lib/brakeman/tracker/config.rb
+++ b/lib/brakeman/tracker/config.rb
@@ -111,6 +111,14 @@ def set_rails_version version = nil
             tracker.options[:rails6] = true
             tracker.options[:rails7] = true
             Brakeman.notify "[Notice] Detected Rails 7 application"
+          elsif @rails_version.start_with? "8"
+            tracker.options[:rails3] = true
+            tracker.options[:rails4] = true
+            tracker.options[:rails5] = true
+            tracker.options[:rails6] = true
+            tracker.options[:rails7] = true
+            tracker.options[:rails8] = true
+            Brakeman.notify "[Notice] Detected Rails 8 application"
           end
         end
       end
@@ -193,7 +201,7 @@ def load_rails_defaults
 
       version = tracker.config.rails[:load_defaults].value.to_s
 
-      unless version.match? /^\d+\.\d+$/
+      unless version.match?(/^\d+\.\d+$/)
         Brakeman.debug "[Notice] Unknown version: #{tracker.config.rails[:load_defaults]}"
         return
       end
diff --git a/lib/ruby_parser/bm_sexp.rb b/lib/ruby_parser/bm_sexp.rb
index 43808698f7..abdee62fcd 100644
--- a/lib/ruby_parser/bm_sexp.rb
+++ b/lib/ruby_parser/bm_sexp.rb
@@ -6,6 +6,7 @@ class Sexp
   ASSIGNMENT_BOOL = [:gasgn, :iasgn, :lasgn, :cvdecl, :cvasgn, :cdecl, :or, :and, :colon2, :op_asgn_or]
   CALLS = [:call, :attrasgn, :safe_call, :safe_attrasgn]
 
+  alias_method :method_missing, :method_missing # silence redefined method warning
   def method_missing name, *args
     #Brakeman does not use this functionality,
     #so overriding it to raise a NoMethodError.
@@ -46,10 +47,12 @@ def deep_clone line = nil
     s
   end
 
+  alias_method :paren, :paren # silence redefined method warning
   def paren
     @paren ||= false
   end
 
+  alias_method :value, :value # silence redefined method warning
   def value
     raise WrongSexpError, "Sexp#value called on multi-item Sexp: `#{self.inspect}`" if size > 2
     self[1]
@@ -98,6 +101,7 @@ def << arg
     old_push arg
   end
 
+  alias_method :hash, :hash # silence redefined method warning
   def hash
     #There still seems to be some instances in which the hash of the
     #Sexp changes, but I have not found what method call is doing it.
@@ -616,7 +620,7 @@ def inspect seen = Set.new
 
 #Invalidate hash cache if the Sexp changes
 [:[]=, :clear, :collect!, :compact!, :concat, :delete, :delete_at,
-  :delete_if, :drop, :drop_while, :fill, :flatten!, :replace, :insert,
+  :delete_if, :drop, :drop_while, :fill, :flatten!, :insert,
   :keep_if, :map!, :pop, :push, :reject!, :replace, :reverse!, :rotate!,
   :select!, :shift, :shuffle!, :slice!, :sort!, :sort_by!, :transpose,
   :uniq!, :unshift].each do |method|
diff --git a/test/apps/rails5.2/config/secrets.yml b/test/apps/rails5.2/config/secrets.yml
index e69de29bb2..15b20e1cd1 100644
--- a/test/apps/rails5.2/config/secrets.yml
+++ b/test/apps/rails5.2/config/secrets.yml
@@ -0,0 +1,34 @@
+# Be sure to restart your server when you modify this file.
+
+# Your secret key is used for verifying the integrity of signed cookies.
+# If you change this key, all old signed cookies will become invalid!
+
+# Make sure the secret is at least 30 characters and all random,
+# no regular words or you'll be exposed to dictionary attacks.
+# You can use `rake secret` to generate a secure secret key.
+
+# Make sure the secrets in this file are kept private
+# if you're sharing your code publicly.
+
+test_anchor: &test_anchor
+  abc: 123
+
+development:
+  test_anchor: *test_anchor
+  secret_key_base: 12d3735e1cdb18ef2eca25f9a370028ac096ff273c5a889ed7a49047d5e30c9dc7fe095792a71b60c3f37dd80efaeda44db75e73c9f60813550c875eee7a241f
+
+test:
+  test_anchor: *test_anchor
+  secret_key_base: 446b08c3cdeccdaf9e8b247a2624d45218c5d429e8acde61ddd87aa7b9dd50973e49e6d94378cb4bcf08b7818a90abb044b5c8886f94de6970ade4a496df22f3
+
+# Do not keep production secrets in the repository,
+# instead read values from the environment.
+production:
+  test_anchor: *test_anchor
+  secret_key_base: <%= ENV["SECRET_KEY_BASE"] %>
+
+<% if Rails.root.join('config/ansible/secrets.yml').exist? %>
+<%= Rails.root.join('config/ansible/secrets.yml').read %>
+<% end %>
+
+
diff --git a/test/apps/rails8/Gemfile b/test/apps/rails8/Gemfile
new file mode 100644
index 0000000000..2738df56c8
--- /dev/null
+++ b/test/apps/rails8/Gemfile
@@ -0,0 +1,54 @@
+source "https://rubygems.org"
+
+# Use main development branch of Rails
+gem "rails", "~> 8.0.0.alpha", github: "rails/rails", branch: "main"
+# The modern asset pipeline for Rails [https://github.com/rails/propshaft]
+gem "propshaft"
+# Use sqlite3 as the database for Active Record
+gem "sqlite3", ">= 1.4"
+# Use the Puma web server [https://github.com/puma/puma]
+gem "puma", ">= 5.0"
+# Use JavaScript with ESM import maps [https://github.com/rails/importmap-rails]
+gem "importmap-rails"
+# Hotwire's SPA-like page accelerator [https://turbo.hotwired.dev]
+gem "turbo-rails"
+# Hotwire's modest JavaScript framework [https://stimulus.hotwired.dev]
+gem "stimulus-rails"
+# Build JSON APIs with ease [https://github.com/rails/jbuilder]
+gem "jbuilder"
+# Use Redis adapter to run Action Cable in production
+gem "redis", ">= 4.0.1"
+
+# Use Kredis to get higher-level data types in Redis [https://github.com/rails/kredis]
+# gem "kredis"
+
+# Use Active Model has_secure_password [https://guides.rubyonrails.org/active_model_basics.html#securepassword]
+# gem "bcrypt", "~> 3.1.7"
+
+# Windows does not include zoneinfo files, so bundle the tzinfo-data gem
+gem "tzinfo-data", platforms: %i[ windows jruby ]
+
+# Reduces boot times through caching; required in config/boot.rb
+gem "bootsnap", require: false
+
+# Deploy this application anywhere as a Docker container [https://kamal-deploy.org]
+# gem "kamal", require: false
+
+# Use Active Storage variants [https://guides.rubyonrails.org/active_storage_overview.html#transforming-images]
+# gem "image_processing", "~> 1.2"
+
+group :development, :test do
+  # See https://guides.rubyonrails.org/debugging_rails_applications.html#debugging-with-the-debug-gem
+  gem "debug", platforms: %i[ mri windows ], require: "debug/prelude"
+
+  # Static analysis for security vulnerabilities [https://brakemanscanner.org/]
+  # gem "brakeman", require: false
+
+  # Omakase Ruby styling [https://github.com/rails/rubocop-rails-omakase/]
+  # gem "rubocop-rails-omakase", require: false
+end
+
+group :development do
+  # Use console on exceptions pages [https://github.com/rails/web-console]
+  gem "web-console"
+end
diff --git a/test/apps/rails8/app/assets/stylesheets/application.css b/test/apps/rails8/app/assets/stylesheets/application.css
new file mode 100644
index 0000000000..dcd72732ea
--- /dev/null
+++ b/test/apps/rails8/app/assets/stylesheets/application.css
@@ -0,0 +1 @@
+/* Application styles */
diff --git a/test/apps/rails8/app/channels/application_cable/channel.rb b/test/apps/rails8/app/channels/application_cable/channel.rb
new file mode 100644
index 0000000000..d672697283
--- /dev/null
+++ b/test/apps/rails8/app/channels/application_cable/channel.rb
@@ -0,0 +1,4 @@
+module ApplicationCable
+  class Channel < ActionCable::Channel::Base
+  end
+end
diff --git a/test/apps/rails8/app/channels/application_cable/connection.rb b/test/apps/rails8/app/channels/application_cable/connection.rb
new file mode 100644
index 0000000000..0ff5442f47
--- /dev/null
+++ b/test/apps/rails8/app/channels/application_cable/connection.rb
@@ -0,0 +1,4 @@
+module ApplicationCable
+  class Connection < ActionCable::Connection::Base
+  end
+end
diff --git a/test/apps/rails8/app/controllers/application_controller.rb b/test/apps/rails8/app/controllers/application_controller.rb
new file mode 100644
index 0000000000..0d95db22b4
--- /dev/null
+++ b/test/apps/rails8/app/controllers/application_controller.rb
@@ -0,0 +1,4 @@
+class ApplicationController < ActionController::Base
+  # Only allow modern browsers supporting webp images, web push, badges, import maps, CSS nesting, and CSS :has.
+  allow_browser versions: :modern
+end
diff --git a/test/apps/rails8/app/helpers/application_helper.rb b/test/apps/rails8/app/helpers/application_helper.rb
new file mode 100644
index 0000000000..de6be7945c
--- /dev/null
+++ b/test/apps/rails8/app/helpers/application_helper.rb
@@ -0,0 +1,2 @@
+module ApplicationHelper
+end
diff --git a/test/apps/rails8/app/javascript/application.js b/test/apps/rails8/app/javascript/application.js
new file mode 100644
index 0000000000..0d7b49404c
--- /dev/null
+++ b/test/apps/rails8/app/javascript/application.js
@@ -0,0 +1,3 @@
+// Configure your import map in config/importmap.rb. Read more: https://github.com/rails/importmap-rails
+import "@hotwired/turbo-rails"
+import "controllers"
diff --git a/test/apps/rails8/app/javascript/controllers/application.js b/test/apps/rails8/app/javascript/controllers/application.js
new file mode 100644
index 0000000000..1213e85c7a
--- /dev/null
+++ b/test/apps/rails8/app/javascript/controllers/application.js
@@ -0,0 +1,9 @@
+import { Application } from "@hotwired/stimulus"
+
+const application = Application.start()
+
+// Configure Stimulus development experience
+application.debug = false
+window.Stimulus   = application
+
+export { application }
diff --git a/test/apps/rails8/app/javascript/controllers/hello_controller.js b/test/apps/rails8/app/javascript/controllers/hello_controller.js
new file mode 100644
index 0000000000..5975c0789d
--- /dev/null
+++ b/test/apps/rails8/app/javascript/controllers/hello_controller.js
@@ -0,0 +1,7 @@
+import { Controller } from "@hotwired/stimulus"
+
+export default class extends Controller {
+  connect() {
+    this.element.textContent = "Hello World!"
+  }
+}
diff --git a/test/apps/rails8/app/javascript/controllers/index.js b/test/apps/rails8/app/javascript/controllers/index.js
new file mode 100644
index 0000000000..54ad4cad4d
--- /dev/null
+++ b/test/apps/rails8/app/javascript/controllers/index.js
@@ -0,0 +1,11 @@
+// Import and register all your controllers from the importmap under controllers/*
+
+import { application } from "controllers/application"
+
+// Eager load all controllers defined in the import map under controllers/**/*_controller
+import { eagerLoadControllersFrom } from "@hotwired/stimulus-loading"
+eagerLoadControllersFrom("controllers", application)
+
+// Lazy load controllers as they appear in the DOM (remember not to preload controllers in import map!)
+// import { lazyLoadControllersFrom } from "@hotwired/stimulus-loading"
+// lazyLoadControllersFrom("controllers", application)
diff --git a/test/apps/rails8/app/jobs/application_job.rb b/test/apps/rails8/app/jobs/application_job.rb
new file mode 100644
index 0000000000..d394c3d106
--- /dev/null
+++ b/test/apps/rails8/app/jobs/application_job.rb
@@ -0,0 +1,7 @@
+class ApplicationJob < ActiveJob::Base
+  # Automatically retry jobs that encountered a deadlock
+  # retry_on ActiveRecord::Deadlocked
+
+  # Most jobs are safe to ignore if the underlying records are no longer available
+  # discard_on ActiveJob::DeserializationError
+end
diff --git a/test/apps/rails8/app/mailers/application_mailer.rb b/test/apps/rails8/app/mailers/application_mailer.rb
new file mode 100644
index 0000000000..3c34c8148f
--- /dev/null
+++ b/test/apps/rails8/app/mailers/application_mailer.rb
@@ -0,0 +1,4 @@
+class ApplicationMailer < ActionMailer::Base
+  default from: "from@example.com"
+  layout "mailer"
+end
diff --git a/test/apps/rails8/app/models/application_record.rb b/test/apps/rails8/app/models/application_record.rb
new file mode 100644
index 0000000000..b63caeb8a5
--- /dev/null
+++ b/test/apps/rails8/app/models/application_record.rb
@@ -0,0 +1,3 @@
+class ApplicationRecord < ActiveRecord::Base
+  primary_abstract_class
+end
diff --git a/test/apps/rails8/app/views/layouts/application.html.erb b/test/apps/rails8/app/views/layouts/application.html.erb
new file mode 100644
index 0000000000..0983ca0749
--- /dev/null
+++ b/test/apps/rails8/app/views/layouts/application.html.erb
@@ -0,0 +1,24 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <title><%= content_for(:title) || "My App" %></title>
+    <meta name="viewport" content="width=device-width,initial-scale=1">
+    <meta name="apple-mobile-web-app-capable" content="yes">
+    <%= csrf_meta_tags %>
+    <%= csp_meta_tag %>
+
+    <%= yield :head %>
+
+    <link rel="manifest" href="/manifest.json">
+    <link rel="icon" href="/icon.png" type="image/png">
+    <link rel="icon" href="/icon.svg" type="image/svg+xml">
+    <link rel="apple-touch-icon" href="/icon.png">
+    
+    <%= stylesheet_link_tag :all, "data-turbo-track": "reload" %>
+    <%= javascript_importmap_tags %>
+  </head>
+
+  <body>
+    <%= yield %>
+  </body>
+</html>
diff --git a/test/apps/rails8/app/views/layouts/mailer.html.erb b/test/apps/rails8/app/views/layouts/mailer.html.erb
new file mode 100644
index 0000000000..3aac9002ed
--- /dev/null
+++ b/test/apps/rails8/app/views/layouts/mailer.html.erb
@@ -0,0 +1,13 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
+    <style>
+      /* Email styles need to be inline */
+    </style>
+  </head>
+
+  <body>
+    <%= yield %>
+  </body>
+</html>
diff --git a/test/apps/rails8/app/views/layouts/mailer.text.erb b/test/apps/rails8/app/views/layouts/mailer.text.erb
new file mode 100644
index 0000000000..37f0bddbd7
--- /dev/null
+++ b/test/apps/rails8/app/views/layouts/mailer.text.erb
@@ -0,0 +1 @@
+<%= yield %>
diff --git a/test/apps/rails8/app/views/pwa/manifest.json.erb b/test/apps/rails8/app/views/pwa/manifest.json.erb
new file mode 100644
index 0000000000..242e0b294e
--- /dev/null
+++ b/test/apps/rails8/app/views/pwa/manifest.json.erb
@@ -0,0 +1,22 @@
+{
+  "name": "MyApp",
+  "icons": [
+    {
+      "src": "/icon.png",
+      "type": "image/png",
+      "sizes": "512x512"
+    },
+    {
+      "src": "/icon.png",
+      "type": "image/png",
+      "sizes": "512x512",
+      "purpose": "maskable"
+    }
+  ],
+  "start_url": "/",
+  "display": "standalone",
+  "scope": "/",
+  "description": "MyApp.",
+  "theme_color": "red",
+  "background_color": "red"
+}
diff --git a/test/apps/rails8/app/views/pwa/service-worker.js b/test/apps/rails8/app/views/pwa/service-worker.js
new file mode 100644
index 0000000000..68d5c2ee66
--- /dev/null
+++ b/test/apps/rails8/app/views/pwa/service-worker.js
@@ -0,0 +1,26 @@
+// Add a service worker for processing Web Push notifications:
+//
+// self.addEventListener("push", async (event) => {
+//   const { title, options } = await event.data.json()
+//   event.waitUntil(self.registration.showNotification(title, options))
+// })
+// 
+// self.addEventListener("notificationclick", function(event) {
+//   event.notification.close()
+//   event.waitUntil(
+//     clients.matchAll({ type: "window" }).then((clientList) => {
+//       for (let i = 0; i < clientList.length; i++) {
+//         let client = clientList[i]
+//         let clientPath = (new URL(client.url)).pathname
+// 
+//         if (clientPath == event.notification.data.path && "focus" in client) {
+//           return client.focus()
+//         }
+//       }
+// 
+//       if (clients.openWindow) {
+//         return clients.openWindow(event.notification.data.path)
+//       }
+//     })
+//   )
+// })
diff --git a/test/apps/rails8/bin/brakeman b/test/apps/rails8/bin/brakeman
new file mode 100755
index 0000000000..ace1c9ba08
--- /dev/null
+++ b/test/apps/rails8/bin/brakeman
@@ -0,0 +1,7 @@
+#!/usr/bin/env ruby
+require "rubygems"
+require "bundler/setup"
+
+ARGV.unshift("--ensure-latest")
+
+load Gem.bin_path("brakeman", "brakeman")
diff --git a/test/apps/rails8/bin/importmap b/test/apps/rails8/bin/importmap
new file mode 100755
index 0000000000..36502ab16c
--- /dev/null
+++ b/test/apps/rails8/bin/importmap
@@ -0,0 +1,4 @@
+#!/usr/bin/env ruby
+
+require_relative "../config/application"
+require "importmap/commands"
diff --git a/test/apps/rails8/bin/kamal b/test/apps/rails8/bin/kamal
new file mode 100755
index 0000000000..cbe59b95ed
--- /dev/null
+++ b/test/apps/rails8/bin/kamal
@@ -0,0 +1,27 @@
+#!/usr/bin/env ruby
+# frozen_string_literal: true
+
+#
+# This file was generated by Bundler.
+#
+# The application 'kamal' is installed as part of a gem, and
+# this file is here to facilitate running it.
+#
+
+ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../Gemfile", __dir__)
+
+bundle_binstub = File.expand_path("bundle", __dir__)
+
+if File.file?(bundle_binstub)
+  if File.read(bundle_binstub, 300).include?("This file was generated by Bundler")
+    load(bundle_binstub)
+  else
+    abort("Your `bin/bundle` was not generated by Bundler, so this binstub cannot run.
+Replace `bin/bundle` by running `bundle binstubs bundler --force`, then run this command again.")
+  end
+end
+
+require "rubygems"
+require "bundler/setup"
+
+load Gem.bin_path("kamal", "kamal")
diff --git a/test/apps/rails8/bin/rails b/test/apps/rails8/bin/rails
new file mode 100755
index 0000000000..efc0377492
--- /dev/null
+++ b/test/apps/rails8/bin/rails
@@ -0,0 +1,4 @@
+#!/usr/bin/env ruby
+APP_PATH = File.expand_path("../config/application", __dir__)
+require_relative "../config/boot"
+require "rails/commands"
diff --git a/test/apps/rails8/bin/rake b/test/apps/rails8/bin/rake
new file mode 100755
index 0000000000..4fbf10b960
--- /dev/null
+++ b/test/apps/rails8/bin/rake
@@ -0,0 +1,4 @@
+#!/usr/bin/env ruby
+require_relative "../config/boot"
+require "rake"
+Rake.application.run
diff --git a/test/apps/rails8/bin/rubocop b/test/apps/rails8/bin/rubocop
new file mode 100755
index 0000000000..40330c0ff1
--- /dev/null
+++ b/test/apps/rails8/bin/rubocop
@@ -0,0 +1,8 @@
+#!/usr/bin/env ruby
+require "rubygems"
+require "bundler/setup"
+
+# explicit rubocop config increases performance slightly while avoiding config confusion.
+ARGV.unshift("--config", File.expand_path("../.rubocop.yml", __dir__))
+
+load Gem.bin_path("rubocop", "rubocop")
diff --git a/test/apps/rails8/bin/setup b/test/apps/rails8/bin/setup
new file mode 100755
index 0000000000..6ab7906897
--- /dev/null
+++ b/test/apps/rails8/bin/setup
@@ -0,0 +1,37 @@
+#!/usr/bin/env ruby
+require "fileutils"
+
+APP_ROOT = File.expand_path("..", __dir__)
+APP_NAME = "my_app"
+
+def system!(*args)
+  system(*args, exception: true)
+end
+
+FileUtils.chdir APP_ROOT do
+  # This script is a way to set up or update your development environment automatically.
+  # This script is idempotent, so that you can run it at any time and get an expectable outcome.
+  # Add necessary setup steps to this file.
+
+  puts "== Installing dependencies =="
+  system! "gem install bundler --conservative"
+  system("bundle check") || system!("bundle install")
+
+  # puts "\n== Copying sample files =="
+  # unless File.exist?("config/database.yml")
+  #   FileUtils.cp "config/database.yml.sample", "config/database.yml"
+  # end
+
+  puts "\n== Preparing database =="
+  system! "bin/rails db:prepare"
+
+  puts "\n== Removing old logs and tempfiles =="
+  system! "bin/rails log:clear tmp:clear"
+
+  puts "\n== Restarting application server =="
+  system! "bin/rails restart"
+
+  # puts "\n== Configuring puma-dev =="
+  # system "ln -nfs #{APP_ROOT} ~/.puma-dev/#{APP_NAME}"
+  # system "curl -Is https://#{APP_NAME}.test/up | head -n 1"
+end
diff --git a/test/apps/rails8/config.ru b/test/apps/rails8/config.ru
new file mode 100644
index 0000000000..4a3c09a688
--- /dev/null
+++ b/test/apps/rails8/config.ru
@@ -0,0 +1,6 @@
+# This file is used by Rack-based servers to start the application.
+
+require_relative "config/environment"
+
+run Rails.application
+Rails.application.load_server
diff --git a/test/apps/rails8/config/application.rb b/test/apps/rails8/config/application.rb
new file mode 100644
index 0000000000..294b283c0d
--- /dev/null
+++ b/test/apps/rails8/config/application.rb
@@ -0,0 +1,42 @@
+require_relative "boot"
+
+require "rails"
+# Pick the frameworks you want:
+require "active_model/railtie"
+require "active_job/railtie"
+require "active_record/railtie"
+require "active_storage/engine"
+require "action_controller/railtie"
+require "action_mailer/railtie"
+require "action_mailbox/engine"
+require "action_text/engine"
+require "action_view/railtie"
+require "action_cable/engine"
+# require "rails/test_unit/railtie"
+
+# Require the gems listed in Gemfile, including any gems
+# you've limited to :test, :development, or :production.
+Bundler.require(*Rails.groups)
+
+module MyApp
+  class Application < Rails::Application
+    # Initialize configuration defaults for originally generated Rails version.
+    config.load_defaults 8.0
+
+    # Please, add to the `ignore` list any other `lib` subdirectories that do
+    # not contain `.rb` files, or that should not be reloaded or eager loaded.
+    # Common ones are `templates`, `generators`, or `middleware`, for example.
+    config.autoload_lib(ignore: %w[assets tasks])
+
+    # Configuration for the application, engines, and railties goes here.
+    #
+    # These settings can be overridden in specific environments using the files
+    # in config/environments, which are processed later.
+    #
+    # config.time_zone = "Central Time (US & Canada)"
+    # config.eager_load_paths << Rails.root.join("extras")
+
+    # Don't generate system test files.
+    config.generators.system_tests = nil
+  end
+end
diff --git a/test/apps/rails8/config/boot.rb b/test/apps/rails8/config/boot.rb
new file mode 100644
index 0000000000..988a5ddc46
--- /dev/null
+++ b/test/apps/rails8/config/boot.rb
@@ -0,0 +1,4 @@
+ENV["BUNDLE_GEMFILE"] ||= File.expand_path("../Gemfile", __dir__)
+
+require "bundler/setup" # Set up gems listed in the Gemfile.
+require "bootsnap/setup" # Speed up boot time by caching expensive operations.
diff --git a/test/apps/rails8/config/cable.yml b/test/apps/rails8/config/cable.yml
new file mode 100644
index 0000000000..1163c48ef3
--- /dev/null
+++ b/test/apps/rails8/config/cable.yml
@@ -0,0 +1,11 @@
+development:
+  adapter: redis
+  url: redis://localhost:6379/1
+
+test:
+  adapter: test
+
+production:
+  adapter: redis
+  url: <%= ENV.fetch("REDIS_URL") { "redis://localhost:6379/1" } %>
+  channel_prefix: my_app_production
diff --git a/test/apps/rails8/config/credentials.yml.enc b/test/apps/rails8/config/credentials.yml.enc
new file mode 100644
index 0000000000..49c316fa50
--- /dev/null
+++ b/test/apps/rails8/config/credentials.yml.enc
@@ -0,0 +1 @@
+H0D18ePAXpz1hsN50y92mMXWQ81JfVpO4AcGAmekoYyhfKnV/axh7XnWCbo2QfCsMqtA3RFlexqE458SmUhC0ELC4XUKbf4YLlDZU3hPdC4AszUkqdZO5XxI9UT2HD77577sYni+mbbxpOESqMr7IvTDEpYvre79afPFBbodif8WEm6fQJVvQT4QbYsuRa1Rxg+cvtBh0MZZEhR2qGahs8b0xyHqKtRBts8NtDaDkM8E9nDQ6rm6/D6/cc9kLmLSvOrlLZcEZc999CyZKOwZKVETuGGGLWeGSL3XBMZdSI7lopzwHBSXn4bcYfuUI1gysxaIBu8X0Z/3Fb/dAIj3gpyE9kVJkC+82EoPpfrrNTu4W2FYxGX7PG+l58BBcpGCpzUOrW3KlOA6pPtwb9swkwlFunxl--I/0189+5PL944kTB--etq+j498EBV5ynkttoEY3w==
\ No newline at end of file
diff --git a/test/apps/rails8/config/database.yml b/test/apps/rails8/config/database.yml
new file mode 100644
index 0000000000..4f787308dc
--- /dev/null
+++ b/test/apps/rails8/config/database.yml
@@ -0,0 +1,28 @@
+# SQLite. Versions 3.8.0 and up are supported.
+#   gem install sqlite3
+#
+#   Ensure the SQLite 3 gem is defined in your Gemfile
+#   gem "sqlite3"
+#
+default: &default
+  adapter: sqlite3
+  pool: <%= ENV.fetch("RAILS_MAX_THREADS") { 5 } %>
+  timeout: 5000
+
+development:
+  <<: *default
+  database: storage/development.sqlite3
+
+# Warning: The database defined as "test" will be erased and
+# re-generated from your development database when you run "rake".
+# Do not set this db to the same as development or production.
+test:
+  <<: *default
+  database: storage/test.sqlite3
+
+
+# Store production database in the storage/ directory, which by default
+# is mounted as a persistent Docker volume in config/deploy.yml.
+production:
+  <<: *default
+  database: storage/production.sqlite3
diff --git a/test/apps/rails8/config/deploy.yml b/test/apps/rails8/config/deploy.yml
new file mode 100644
index 0000000000..d626493a69
--- /dev/null
+++ b/test/apps/rails8/config/deploy.yml
@@ -0,0 +1,87 @@
+# Name of your application. Used to uniquely configure containers.
+service: my_app
+
+# Name of the container image.
+image: your-user/my_app
+
+# Deploy to these servers.
+servers:
+  web:
+    - 192.168.0.1
+  # job:
+  #   hosts:
+  #     - 192.168.0.1
+  #   cmd: bin/solid_queue work
+
+# Credentials for your image host.
+registry:
+  # Specify the registry server, if you're not using Docker Hub
+  # server: registry.digitalocean.com / ghcr.io / ...
+  username: your-user
+
+  # Always use an access token rather than real password when possible.
+  password:
+    - KAMAL_REGISTRY_PASSWORD
+
+# Inject ENV variables into containers (secrets come from .env).
+# Remember to run `kamal env push` after making changes!
+env:
+  secret:
+    - RAILS_MASTER_KEY
+  # clear:
+  #   DB_HOST: 192.168.0.2
+
+
+# Use a persistent storage volume for sqlite database files and local Active Storage files.
+# Recommended to change this to a mounted volume path that is backed up off server.
+volumes:
+  - "my_app_storage:/rails/storage"
+
+
+# Bridge fingerprinted assets, like JS and CSS, between versions to avoid
+# hitting 404 on in-flight requests. Combines all files from new and old
+# version inside the asset_path.
+asset_path: /rails/public/assets
+
+# Use a different ssh user than root
+# ssh:
+#   user: app
+
+# Configure builder setup (defaults to multi-arch images).
+# builder:
+#   # Build same-arch image locally (use for x86->x86)
+#   multiarch: false
+#
+#   # Build diff-arch image via remote server
+#   remote:
+#     arch: amd64
+#     host: ssh://app@192.168.0.1
+#
+#   args:
+#     RUBY_VERSION: ruby-3.3.0
+#   secrets:
+#     - GITHUB_TOKEN
+#     - RAILS_MASTER_KEY
+
+# Use accessory services (secrets come from .env).
+# accessories:
+#   db:
+#     image: mysql:8.0
+#     host: 192.168.0.2
+#     port: 3306
+#     env:
+#       clear:
+#         MYSQL_ROOT_HOST: '%'
+#       secret:
+#         - MYSQL_ROOT_PASSWORD
+#     files:
+#       - config/mysql/production.cnf:/etc/mysql/my.cnf
+#       - db/production.sql:/docker-entrypoint-initdb.d/setup.sql
+#     directories:
+#       - data:/var/lib/mysql
+#   redis:
+#     image: redis:7.0
+#     host: 192.168.0.2
+#     port: 6379
+#     directories:
+#       - data:/data
diff --git a/test/apps/rails8/config/environment.rb b/test/apps/rails8/config/environment.rb
new file mode 100644
index 0000000000..cac5315775
--- /dev/null
+++ b/test/apps/rails8/config/environment.rb
@@ -0,0 +1,5 @@
+# Load the Rails application.
+require_relative "application"
+
+# Initialize the Rails application.
+Rails.application.initialize!
diff --git a/test/apps/rails8/config/environments/development.rb b/test/apps/rails8/config/environments/development.rb
new file mode 100644
index 0000000000..62f6722c10
--- /dev/null
+++ b/test/apps/rails8/config/environments/development.rb
@@ -0,0 +1,71 @@
+require "active_support/core_ext/integer/time"
+
+Rails.application.configure do
+  # Settings specified here will take precedence over those in config/application.rb.
+
+  # In the development environment your application's code is reloaded any time
+  # it changes. This slows down response time but is perfect for development
+  # since you don't have to restart the web server when you make code changes.
+  config.enable_reloading = true
+
+  # Do not eager load code on boot.
+  config.eager_load = false
+
+  # Show full error reports.
+  config.consider_all_requests_local = true
+
+  # Enable server timing.
+  config.server_timing = true
+
+  # Enable/disable caching. By default caching is disabled.
+  # Run rails dev:cache to toggle caching.
+  if Rails.root.join("tmp/caching-dev.txt").exist?
+    config.action_controller.perform_caching = true
+    config.action_controller.enable_fragment_cache_logging = true
+
+    config.cache_store = :memory_store
+    config.public_file_server.headers = { "Cache-Control" => "public, max-age=#{2.days.to_i}" }
+  else
+    config.action_controller.perform_caching = false
+
+    config.cache_store = :null_store
+  end
+
+  # Store uploaded files on the local file system (see config/storage.yml for options).
+  config.active_storage.service = :local
+
+  # Don't care if the mailer can't send.
+  config.action_mailer.raise_delivery_errors = false
+
+  config.action_mailer.perform_caching = false
+
+  config.action_mailer.default_url_options = { host: "localhost", port: 3000 }
+
+  # Print deprecation notices to the Rails logger.
+  config.active_support.deprecation = :log
+
+  # Raise an error on page load if there are pending migrations.
+  config.active_record.migration_error = :page_load
+
+  # Highlight code that triggered database queries in logs.
+  config.active_record.verbose_query_logs = true
+
+  # Highlight code that enqueued background job in logs.
+  config.active_job.verbose_enqueue_logs = true
+
+
+  # Raises error for missing translations.
+  # config.i18n.raise_on_missing_translations = true
+
+  # Annotate rendered view with file names.
+  config.action_view.annotate_rendered_view_with_filenames = true
+
+  # Uncomment if you wish to allow Action Cable access from any origin.
+  # config.action_cable.disable_request_forgery_protection = true
+
+  # Raise error when a before_action's only/except options reference missing actions.
+  config.action_controller.raise_on_missing_callback_actions = true
+
+  # Apply autocorrection by RuboCop to files generated by `bin/rails generate`.
+  # config.generators.apply_rubocop_autocorrect_after_generate!
+end
diff --git a/test/apps/rails8/config/environments/production.rb b/test/apps/rails8/config/environments/production.rb
new file mode 100644
index 0000000000..9ef7bcb115
--- /dev/null
+++ b/test/apps/rails8/config/environments/production.rb
@@ -0,0 +1,94 @@
+require "active_support/core_ext/integer/time"
+
+Rails.application.configure do
+  # Settings specified here will take precedence over those in config/application.rb.
+
+  # Code is not reloaded between requests.
+  config.enable_reloading = false
+
+  # Eager load code on boot. This eager loads most of Rails and
+  # your application in memory, allowing both threaded web servers
+  # and those relying on copy on write to perform better.
+  # Rake tasks automatically ignore this option for performance.
+  config.eager_load = true
+
+  # Full error reports are disabled and caching is turned on.
+  config.consider_all_requests_local = false
+  config.action_controller.perform_caching = true
+
+  # Ensures that a master key has been made available in ENV["RAILS_MASTER_KEY"], config/master.key, or an environment
+  # key such as config/credentials/production.key. This key is used to decrypt credentials (and other encrypted files).
+  # config.require_master_key = true
+
+  # Disable serving static files from `public/`, relying on NGINX/Apache to do so instead.
+  # config.public_file_server.enabled = false
+
+  # Enable serving of images, stylesheets, and JavaScripts from an asset server.
+  # config.asset_host = "http://assets.example.com"
+
+  # Specifies the header that your server uses for sending files.
+  # config.action_dispatch.x_sendfile_header = "X-Sendfile" # for Apache
+  # config.action_dispatch.x_sendfile_header = "X-Accel-Redirect" # for NGINX
+
+  # Store uploaded files on the local file system (see config/storage.yml for options).
+  config.active_storage.service = :local
+
+  # Mount Action Cable outside main process or domain.
+  # config.action_cable.mount_path = nil
+  # config.action_cable.url = "wss://example.com/cable"
+  # config.action_cable.allowed_request_origins = [ "http://example.com", /http:\/\/example.*/ ]
+
+  # Assume all access to the app is happening through a SSL-terminating reverse proxy.
+  # Can be used together with config.force_ssl for Strict-Transport-Security and secure cookies.
+  # config.assume_ssl = true
+
+  # Force all access to the app over SSL, use Strict-Transport-Security, and use secure cookies.
+  config.force_ssl = true
+  
+  # Skip http-to-https redirect for the default health check endpoint.
+  # config.ssl_options = { redirect: { exclude: ->(request) { request.path == "/up" } } }
+
+  # Log to STDOUT by default
+  config.logger = ActiveSupport::Logger.new(STDOUT)
+    .tap  { |logger| logger.formatter = ::Logger::Formatter.new }
+    .then { |logger| ActiveSupport::TaggedLogging.new(logger) }
+
+  # Prepend all log lines with the following tags.
+  config.log_tags = [ :request_id ]
+
+  # "info" includes generic and useful information about system operation, but avoids logging too much
+  # information to avoid inadvertent exposure of personally identifiable information (PII). If you
+  # want to log everything, set the level to "debug".
+  config.log_level = ENV.fetch("RAILS_LOG_LEVEL", "info")
+
+  # Use a different cache store in production.
+  # config.cache_store = :mem_cache_store
+
+  # Use a real queuing backend for Active Job (and separate queues per environment).
+  # config.active_job.queue_adapter = :resque
+  # config.active_job.queue_name_prefix = "my_app_production"
+
+  config.action_mailer.perform_caching = false
+
+  # Ignore bad email addresses and do not raise email delivery errors.
+  # Set this to true and configure the email server for immediate delivery to raise delivery errors.
+  # config.action_mailer.raise_delivery_errors = false
+
+  # Enable locale fallbacks for I18n (makes lookups for any locale fall back to
+  # the I18n.default_locale when a translation cannot be found).
+  config.i18n.fallbacks = true
+
+  # Don't log any deprecations.
+  config.active_support.report_deprecations = false
+
+  # Do not dump schema after migrations.
+  config.active_record.dump_schema_after_migration = false
+
+  # Enable DNS rebinding protection and other `Host` header attacks.
+  # config.hosts = [
+  #   "example.com",     # Allow requests from example.com
+  #   /.*\.example\.com/ # Allow requests from subdomains like `www.example.com`
+  # ]
+  # Skip DNS rebinding protection for the default health check endpoint.
+  # config.host_authorization = { exclude: ->(request) { request.path == "/up" } }
+end
diff --git a/test/apps/rails8/config/environments/test.rb b/test/apps/rails8/config/environments/test.rb
new file mode 100644
index 0000000000..83d1fa9cc5
--- /dev/null
+++ b/test/apps/rails8/config/environments/test.rb
@@ -0,0 +1,59 @@
+require "active_support/core_ext/integer/time"
+
+# The test environment is used exclusively to run your application's
+# test suite. You never need to work with it otherwise. Remember that
+# your test database is "scratch space" for the test suite and is wiped
+# and recreated between test runs. Don't rely on the data there!
+
+Rails.application.configure do
+  # Settings specified here will take precedence over those in config/application.rb.
+
+  # While tests run files are not watched, reloading is not necessary.
+  config.enable_reloading = false
+
+  # Eager loading loads your entire application. When running a single test locally,
+  # this is usually not necessary, and can slow down your test suite. However, it's
+  # recommended that you enable it in continuous integration systems to ensure eager
+  # loading is working properly before deploying your code.
+  config.eager_load = ENV["CI"].present?
+
+  # Configure public file server for tests with Cache-Control for performance.
+  config.public_file_server.headers = { "Cache-Control" => "public, max-age=#{1.hour.to_i}" }
+
+  # Show full error reports and disable caching.
+  config.consider_all_requests_local = true
+  config.action_controller.perform_caching = false
+  config.cache_store = :null_store
+
+  # Render exception templates for rescuable exceptions and raise for other exceptions.
+  config.action_dispatch.show_exceptions = :rescuable
+
+  # Disable request forgery protection in test environment.
+  config.action_controller.allow_forgery_protection = false
+
+  # Store uploaded files on the local file system in a temporary directory.
+  config.active_storage.service = :test
+
+  config.action_mailer.perform_caching = false
+
+  # Tell Action Mailer not to deliver emails to the real world.
+  # The :test delivery method accumulates sent emails in the
+  # ActionMailer::Base.deliveries array.
+  config.action_mailer.delivery_method = :test
+
+  # Unlike controllers, the mailer instance doesn't have any context about the
+  # incoming request so you'll need to provide the :host parameter yourself.
+  config.action_mailer.default_url_options = { host: "www.example.com" }
+
+  # Print deprecation notices to the stderr.
+  config.active_support.deprecation = :stderr
+
+  # Raises error for missing translations.
+  # config.i18n.raise_on_missing_translations = true
+
+  # Annotate rendered view with file names.
+  # config.action_view.annotate_rendered_view_with_filenames = true
+
+  # Raise error when a before_action's only/except options reference missing actions.
+  config.action_controller.raise_on_missing_callback_actions = true
+end
diff --git a/test/apps/rails8/config/importmap.rb b/test/apps/rails8/config/importmap.rb
new file mode 100644
index 0000000000..909dfc542d
--- /dev/null
+++ b/test/apps/rails8/config/importmap.rb
@@ -0,0 +1,7 @@
+# Pin npm packages by running ./bin/importmap
+
+pin "application"
+pin "@hotwired/turbo-rails", to: "turbo.min.js"
+pin "@hotwired/stimulus", to: "stimulus.min.js"
+pin "@hotwired/stimulus-loading", to: "stimulus-loading.js"
+pin_all_from "app/javascript/controllers", under: "controllers"
diff --git a/test/apps/rails8/config/initializers/assets.rb b/test/apps/rails8/config/initializers/assets.rb
new file mode 100644
index 0000000000..487324424f
--- /dev/null
+++ b/test/apps/rails8/config/initializers/assets.rb
@@ -0,0 +1,7 @@
+# Be sure to restart your server when you modify this file.
+
+# Version of your assets, change this if you want to expire all your assets.
+Rails.application.config.assets.version = "1.0"
+
+# Add additional assets to the asset load path.
+# Rails.application.config.assets.paths << Emoji.images_path
diff --git a/test/apps/rails8/config/initializers/content_security_policy.rb b/test/apps/rails8/config/initializers/content_security_policy.rb
new file mode 100644
index 0000000000..b3076b38fe
--- /dev/null
+++ b/test/apps/rails8/config/initializers/content_security_policy.rb
@@ -0,0 +1,25 @@
+# Be sure to restart your server when you modify this file.
+
+# Define an application-wide content security policy.
+# See the Securing Rails Applications Guide for more information:
+# https://guides.rubyonrails.org/security.html#content-security-policy-header
+
+# Rails.application.configure do
+#   config.content_security_policy do |policy|
+#     policy.default_src :self, :https
+#     policy.font_src    :self, :https, :data
+#     policy.img_src     :self, :https, :data
+#     policy.object_src  :none
+#     policy.script_src  :self, :https
+#     policy.style_src   :self, :https
+#     # Specify URI for violation reports
+#     # policy.report_uri "/csp-violation-report-endpoint"
+#   end
+#
+#   # Generate session nonces for permitted importmap, inline scripts, and inline styles.
+#   config.content_security_policy_nonce_generator = ->(request) { request.session.id.to_s }
+#   config.content_security_policy_nonce_directives = %w(script-src style-src)
+#
+#   # Report violations without enforcing the policy.
+#   # config.content_security_policy_report_only = true
+# end
diff --git a/test/apps/rails8/config/initializers/filter_parameter_logging.rb b/test/apps/rails8/config/initializers/filter_parameter_logging.rb
new file mode 100644
index 0000000000..c010b83ddd
--- /dev/null
+++ b/test/apps/rails8/config/initializers/filter_parameter_logging.rb
@@ -0,0 +1,8 @@
+# Be sure to restart your server when you modify this file.
+
+# Configure parameters to be partially matched (e.g. passw matches password) and filtered from the log file.
+# Use this to limit dissemination of sensitive information.
+# See the ActiveSupport::ParameterFilter documentation for supported notations and behaviors.
+Rails.application.config.filter_parameters += [
+  :passw, :email, :secret, :token, :_key, :crypt, :salt, :certificate, :otp, :ssn
+]
diff --git a/test/apps/rails8/config/initializers/inflections.rb b/test/apps/rails8/config/initializers/inflections.rb
new file mode 100644
index 0000000000..3860f659ea
--- /dev/null
+++ b/test/apps/rails8/config/initializers/inflections.rb
@@ -0,0 +1,16 @@
+# Be sure to restart your server when you modify this file.
+
+# Add new inflection rules using the following format. Inflections
+# are locale specific, and you may define rules for as many different
+# locales as you wish. All of these examples are active by default:
+# ActiveSupport::Inflector.inflections(:en) do |inflect|
+#   inflect.plural /^(ox)$/i, "\\1en"
+#   inflect.singular /^(ox)en/i, "\\1"
+#   inflect.irregular "person", "people"
+#   inflect.uncountable %w( fish sheep )
+# end
+
+# These inflection rules are supported but not enabled by default:
+# ActiveSupport::Inflector.inflections(:en) do |inflect|
+#   inflect.acronym "RESTful"
+# end
diff --git a/test/apps/rails8/config/initializers/permissions_policy.rb b/test/apps/rails8/config/initializers/permissions_policy.rb
new file mode 100644
index 0000000000..7db3b9577e
--- /dev/null
+++ b/test/apps/rails8/config/initializers/permissions_policy.rb
@@ -0,0 +1,13 @@
+# Be sure to restart your server when you modify this file.
+
+# Define an application-wide HTTP permissions policy. For further
+# information see: https://developers.google.com/web/updates/2018/06/feature-policy
+
+# Rails.application.config.permissions_policy do |policy|
+#   policy.camera      :none
+#   policy.gyroscope   :none
+#   policy.microphone  :none
+#   policy.usb         :none
+#   policy.fullscreen  :self
+#   policy.payment     :self, "https://secure.example.com"
+# end
diff --git a/test/apps/rails8/config/locales/en.yml b/test/apps/rails8/config/locales/en.yml
new file mode 100644
index 0000000000..6c349ae5e3
--- /dev/null
+++ b/test/apps/rails8/config/locales/en.yml
@@ -0,0 +1,31 @@
+# Files in the config/locales directory are used for internationalization and
+# are automatically loaded by Rails. If you want to use locales other than
+# English, add the necessary files in this directory.
+#
+# To use the locales, use `I18n.t`:
+#
+#     I18n.t "hello"
+#
+# In views, this is aliased to just `t`:
+#
+#     <%= t("hello") %>
+#
+# To use a different locale, set it with `I18n.locale`:
+#
+#     I18n.locale = :es
+#
+# This would use the information in config/locales/es.yml.
+#
+# To learn more about the API, please read the Rails Internationalization guide
+# at https://guides.rubyonrails.org/i18n.html.
+#
+# Be aware that YAML interprets the following case-insensitive strings as
+# booleans: `true`, `false`, `on`, `off`, `yes`, `no`. Therefore, these strings
+# must be quoted to be interpreted as strings. For example:
+#
+#     en:
+#       "yes": yup
+#       enabled: "ON"
+
+en:
+  hello: "Hello world"
diff --git a/test/apps/rails8/config/master.key b/test/apps/rails8/config/master.key
new file mode 100644
index 0000000000..922dbd5ec5
--- /dev/null
+++ b/test/apps/rails8/config/master.key
@@ -0,0 +1 @@
+14cad5d3e84a5abfc93a8d61873a7f66
\ No newline at end of file
diff --git a/test/apps/rails8/config/puma.rb b/test/apps/rails8/config/puma.rb
new file mode 100644
index 0000000000..f976b8aa37
--- /dev/null
+++ b/test/apps/rails8/config/puma.rb
@@ -0,0 +1,54 @@
+# This configuration file will be evaluated by Puma. The top-level methods that
+# are invoked here are part of Puma's configuration DSL. For more information
+# about methods provided by the DSL, see https://puma.io/puma/Puma/DSL.html.
+
+# Puma starts a configurable number of processes (workers) and each process
+# serves each request in a thread from an internal thread pool.
+#
+# The ideal number of threads per worker depends both on how much time the
+# application spends waiting for IO operations and on how much you wish to
+# prioritize throughput over latency.
+#
+# As a rule of thumb, increasing the number of threads will increase how much
+# traffic a given process can handle (throughput), but due to CRuby's
+# Global VM Lock (GVL) it has diminishing returns and will degrade the
+# response time (latency) of the application.
+#
+# The default is set to 3 threads as it's deemed a decent compromise between
+# throughput and latency for the average Rails application.
+#
+# Any libraries that use a connection pool or another resource pool should
+# be configured to provide at least as many connections as the number of
+# threads. This includes Active Record's `pool` parameter in `database.yml`.
+threads_count = ENV.fetch("RAILS_MAX_THREADS", 3)
+threads threads_count, threads_count
+
+# Specifies the `environment` that Puma will run in.
+rails_env = ENV.fetch("RAILS_ENV", "development")
+environment rails_env
+
+case rails_env
+when "production"
+  # If you are running more than 1 thread per process, the workers count
+  # should be equal to the number of processors (CPU cores) in production.
+  #
+  # Automatically detect the number of available processors in production.
+  require "concurrent-ruby"
+  workers_count = Integer(ENV.fetch("WEB_CONCURRENCY") { Concurrent.available_processor_count })
+  workers workers_count if workers_count > 1
+
+  preload_app!
+when "development"
+  # Specifies a very generous `worker_timeout` so that the worker
+  # isn't killed by Puma when suspended by a debugger.
+  worker_timeout 3600
+end
+
+# Specifies the `port` that Puma will listen on to receive requests; default is 3000.
+port ENV.fetch("PORT", 3000)
+
+# Allow puma to be restarted by `bin/rails restart` command.
+plugin :tmp_restart
+
+# Only use a pidfile when requested
+pidfile ENV["PIDFILE"] if ENV["PIDFILE"]
diff --git a/test/apps/rails8/config/routes.rb b/test/apps/rails8/config/routes.rb
new file mode 100644
index 0000000000..33c9639036
--- /dev/null
+++ b/test/apps/rails8/config/routes.rb
@@ -0,0 +1,14 @@
+Rails.application.routes.draw do
+  # Define your application routes per the DSL in https://guides.rubyonrails.org/routing.html
+
+  # Reveal health status on /up that returns 200 if the app boots with no exceptions, otherwise 500.
+  # Can be used by load balancers and uptime monitors to verify that the app is live.
+  get "up" => "rails/health#show", as: :rails_health_check
+
+  # Render dynamic PWA files from app/views/pwa/*
+  get "service-worker" => "rails/pwa#service_worker", as: :pwa_service_worker
+  get "manifest" => "rails/pwa#manifest", as: :pwa_manifest
+
+  # Defines the root path route ("/")
+  # root "posts#index"
+end
diff --git a/test/apps/rails8/config/storage.yml b/test/apps/rails8/config/storage.yml
new file mode 100644
index 0000000000..4942ab6694
--- /dev/null
+++ b/test/apps/rails8/config/storage.yml
@@ -0,0 +1,34 @@
+test:
+  service: Disk
+  root: <%= Rails.root.join("tmp/storage") %>
+
+local:
+  service: Disk
+  root: <%= Rails.root.join("storage") %>
+
+# Use bin/rails credentials:edit to set the AWS secrets (as aws:access_key_id|secret_access_key)
+# amazon:
+#   service: S3
+#   access_key_id: <%= Rails.application.credentials.dig(:aws, :access_key_id) %>
+#   secret_access_key: <%= Rails.application.credentials.dig(:aws, :secret_access_key) %>
+#   region: us-east-1
+#   bucket: your_own_bucket-<%= Rails.env %>
+
+# Remember not to checkin your GCS keyfile to a repository
+# google:
+#   service: GCS
+#   project: your_project
+#   credentials: <%= Rails.root.join("path/to/gcs.keyfile") %>
+#   bucket: your_own_bucket-<%= Rails.env %>
+
+# Use bin/rails credentials:edit to set the Azure Storage secret (as azure_storage:storage_access_key)
+# microsoft:
+#   service: AzureStorage
+#   storage_account_name: your_account_name
+#   storage_access_key: <%= Rails.application.credentials.dig(:azure_storage, :storage_access_key) %>
+#   container: your_container_name-<%= Rails.env %>
+
+# mirror:
+#   service: Mirror
+#   primary: local
+#   mirrors: [ amazon, google, microsoft ]
diff --git a/test/tests/alias_processor.rb b/test/tests/alias_processor.rb
index e1f653a061..e1bb7aef91 100644
--- a/test/tests/alias_processor.rb
+++ b/test/tests/alias_processor.rb
@@ -1010,6 +1010,38 @@ def test_branch_with_self_assign_target
     INPUT
   end
 
+  def test_splat_assign
+    assert_alias '[[3, 4]]', <<-INPUT
+    x, y, *z = [1, 2, [3, 4]]
+    z
+    INPUT
+
+    assert_alias '[3, 4]', <<-INPUT
+    x, y, *z = 1, 2, 3, 4
+    z
+    INPUT
+
+    assert_alias '[2, 3]', <<-INPUT
+    a, *b, c = 1, 2, 3, 4
+    b
+    INPUT
+
+    assert_alias '[2]', <<-INPUT
+    a, *b, c, d = 1, 2, 3, 4
+    b
+    INPUT
+
+    assert_alias '[]', <<-INPUT
+    a, *b, c, d = 1, 2, 3
+    b
+    INPUT
+
+    assert_alias '[[]]', <<-INPUT
+    *a = [[]]
+    a
+    INPUT
+  end
+
   def test_presence_in_all_literals
     assert_alias "'1'", <<-INPUT
     x = '1'.presence_in ['1', '2', '3']
diff --git a/test/tests/options.rb b/test/tests/options.rb
index e7ed28e30c..d49c4fdcc5 100644
--- a/test/tests/options.rb
+++ b/test/tests/options.rb
@@ -10,6 +10,7 @@ class BrakemanOptionsTest < Minitest::Test
     :rails5                 => "-5",
     :rails6                 => "-6",
     :rails7                 => "-7",
+    :rails8                 => "-8",
     :run_all_checks         => "-A",
     :assume_all_routes      => "-a",
     :escape_html            => "-e",
@@ -40,6 +41,7 @@ class BrakemanOptionsTest < Minitest::Test
     :rails5                 => "--rails5",
     :rails6                 => "--rails6",
     :rails7                 => "--rails7",
+    :rails8                 => "--rails8",
     :run_all_checks         => "--run-all-checks",
     :escape_html            => "--escape-html",
     :debug                  => "--debug",
diff --git a/test/tests/rails8.rb b/test/tests/rails8.rb
new file mode 100644
index 0000000000..39f388ec3d
--- /dev/null
+++ b/test/tests/rails8.rb
@@ -0,0 +1,22 @@
+require_relative "../test"
+
+class Rails8Tests < Minitest::Test
+  include BrakemanTester::FindWarning
+  include BrakemanTester::CheckExpected
+
+  def report
+    @@report ||=
+      Date.stub :today, Date.parse("2024-05-13") do
+        BrakemanTester.run_scan "rails8", "Rails 8", run_all_checks: true
+      end
+  end
+
+  def expected
+    @@expected ||= {
+      controller: 0,
+      model:      0,
+      template:   0,
+      warning:    0
+    }
+  end
+end
diff --git a/test/tests/report_generation.rb b/test/tests/report_generation.rb
index 3aff3dfb6e..c8138ad7fd 100644
--- a/test/tests/report_generation.rb
+++ b/test/tests/report_generation.rb
@@ -19,7 +19,7 @@ def test_html_sanity
 
   def test_table_sanity
     require 'highline/io_console_compatible' # For StringIO compatibility
-    report = @@report.to_table
+    @@report.to_table
   end
 
   def test_json_sanity