diff --git a/bin/docker/boot_dev b/bin/docker/boot_dev
index 9d4ffed5409..e319791506c 100755
--- a/bin/docker/boot_dev
+++ b/bin/docker/boot_dev
@@ -89,7 +89,15 @@ done
 # 9292 unicorn
 # 9405 prometheus exporter
 
-docker pull discourse/discourse_dev:release
+if [ "$(uname -m)" == "aarch64" ]; then
+    # NOTE: we currently (2024-01-17) don’t build an aarch64 image, so one must be pre-built locally.
+    # Avoiding `docker pull` so we don't override that local image.
+    ENV_ARGS+=" -e SE_MANAGER_PATH=/usr/local/bin/selenium-manager "
+else
+    # x86_64 environment - pull the latest image from dockerhub
+    docker pull discourse/discourse_dev:release
+fi
+
 docker run -d \
     -p $local_publish:8025:8025 \
     -p $local_publish:3000:3000 \
diff --git a/spec/rails_helper.rb b/spec/rails_helper.rb
index fb976945605..528bfaa6ba3 100644
--- a/spec/rails_helper.rb
+++ b/spec/rails_helper.rb
@@ -421,6 +421,23 @@ RSpec.configure do |config|
       Capybara::Selenium::Driver.new(app, **mobile_driver_options)
     end
 
+    Capybara.register_driver :selenium_firefox_headless do |app|
+      options =
+        Selenium::WebDriver::Firefox::Options.new(
+          args: %w[--window-size=1400,1400 --headless],
+          prefs: {
+            "browser.download.dir": Downloads::FOLDER,
+          },
+          log_level: ENV["SELENIUM_BROWSER_LOG_LEVEL"] || :warn,
+        )
+      Capybara::Selenium::Driver.new(
+        app,
+        browser: :firefox,
+        timeout: BROWSER_READ_TIMEOUT,
+        options: options,
+      )
+    end
+
     if ENV["ELEVATED_UPLOADS_ID"]
       DB.exec "SELECT setval('uploads_id_seq', 10000)"
     else
@@ -555,7 +572,7 @@ RSpec.configure do |config|
       #
       # The long term fix here is to get `selenium-manager` to download the `chromedriver` binary to a unique path for each
       # process but the `--cache-path` option for `selenium-manager` is currently not supported in `selenium-webdriver`.
-      if !File.directory?("~/.cache/selenium")
+      if !File.directory?(File.expand_path("~/.cache/selenium"))
         File.open("#{Rails.root}/tmp/chrome_driver_flock", "w") do |file|
           file.flock(File::LOCK_EX)
           `#{Selenium::WebDriver::SeleniumManager.send(:binary)} --browser chrome`
@@ -576,8 +593,15 @@ RSpec.configure do |config|
 
     driver = [:selenium]
     driver << :mobile if example.metadata[:mobile]
-    driver << :chrome
+    driver << (aarch64? ? :firefox : :chrome)
     driver << :headless unless ENV["SELENIUM_HEADLESS"] == "0"
+
+    if driver.include?(:firefox)
+      STDERR.puts(
+        "WARNING: Running system specs using the Firefox driver is not officially supported. Some tests will fail.",
+      )
+    end
+
     driven_by driver.join("_").to_sym
 
     setup_system_test
@@ -595,7 +619,8 @@ RSpec.configure do |config|
       lines << "~~~~~ END DRIVER LOGS ~~~~~"
     end
 
-    js_logs = page.driver.browser.logs.get(:browser)
+    # The logs API isn’t available (yet?) with the Firefox driver
+    js_logs = aarch64? ? [] : page.driver.browser.logs.get(:browser)
 
     # Recommended that this is not disabled, since it makes debugging
     # failed system tests a lot trickier.
@@ -897,6 +922,10 @@ def apply_base_chrome_options(options)
   end
 end
 
+def aarch64?
+  RUBY_PLATFORM == "aarch64-linux"
+end
+
 class SpecSecureRandom
   class << self
     attr_accessor :value