From 68d0f95262c83adebd9ec3a416d53d8d54ada166 Mon Sep 17 00:00:00 2001
From: anthony kugel <anthonykugel@gmail.com>
Date: Mon, 12 Jun 2023 07:13:19 -0500
Subject: [PATCH] Fixed #34649 -- Fixed headless deprecation warning on
 Selenium 4.8+.

Thanks David Smith for the report and initial patch.
---
 django/test/selenium.py | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/django/test/selenium.py b/django/test/selenium.py
index aa714ad365e..86ff9e2f4f0 100644
--- a/django/test/selenium.py
+++ b/django/test/selenium.py
@@ -79,10 +79,11 @@ class SeleniumTestCaseBase(type(LiveServerTestCase)):
     def create_options(self):
         options = self.import_options(self.browser)()
         if self.headless:
-            try:
-                options.headless = True
-            except AttributeError:
-                pass  # Only Chrome and Firefox support the headless mode.
+            match self.browser:
+                case "chrome":
+                    options.add_argument("--headless=new")
+                case "firefox":
+                    options.add_argument("-headless")
         return options
 
     def create_webdriver(self):