diff --git a/spec/rails_helper.rb b/spec/rails_helper.rb
index 1070c35362f..08624a61d98 100644
--- a/spec/rails_helper.rb
+++ b/spec/rails_helper.rb
@@ -607,15 +607,8 @@ RSpec.configure do |config|
 
     driver = [:selenium]
     driver << :mobile if example.metadata[:mobile]
-    driver << (aarch64? ? :firefox : :chrome)
+    driver << :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
@@ -635,8 +628,7 @@ RSpec.configure do |config|
       lines << "~~~~~ END DRIVER LOGS ~~~~~"
     end
 
-    # The logs API isn’t available (yet?) with the Firefox driver
-    js_logs = aarch64? ? [] : page.driver.browser.logs.get(:browser)
+    js_logs = page.driver.browser.logs.get(:browser)
 
     # Recommended that this is not disabled, since it makes debugging
     # failed system tests a lot trickier.
@@ -954,10 +946,22 @@ def apply_base_chrome_options(options)
   if ENV["CHROME_DISABLE_FORCE_DEVICE_SCALE_FACTOR"].blank?
     options.add_argument("--force-device-scale-factor=1")
   end
-end
 
-def aarch64?
-  RUBY_PLATFORM == "aarch64-linux"
+  if ENV["DISCOURSE_SYSTEM_TEST_CHROMIUM"] == "1"
+    options.binary =
+      case RUBY_PLATFORM
+      when /linux/
+        "/usr/bin/chromium"
+      when /darwin/
+        "/Applications/Chromium.app/Contents/MacOS/Chromium"
+      else
+        "Running Discourse system test with Chromium on #{RUBY_PLATFORM} is not supported"
+      end
+  end
+
+  if (chromedriver_path = ENV["DISCOURSE_SYSTEM_TEST_CHROMEDRIVER_PATH"]).present?
+    Selenium::WebDriver::Chrome::Service.driver_path = chromedriver_path
+  end
 end
 
 class SpecSecureRandom