diff --git a/karma.saucelabs.conf.cjs b/karma.saucelabs.conf.cjs
index 205d13a2c..89f093940 100644
--- a/karma.saucelabs.conf.cjs
+++ b/karma.saucelabs.conf.cjs
@@ -19,29 +19,29 @@ module.exports = (config) => {
       base: "SauceLabs",
       browserName: "chrome",
       browserVersion: "latest",
-      platform: "Windows 11",
+      platformName: "Windows 11",
+      "sauce:options": {
+        headless: true,
+      },
     },
     sl_safariW3C: {
       base: "SauceLabs",
       browserName: "safari",
       browserVersion: "latest",
-      platform: "macOS 13",
+      platformName: "macOS 13",
+      "sauce:options": {
+        headless: true,
+      },
     },
     sl_firefoxW3C: {
       base: "SauceLabs",
       browserName: "firefox",
-      platformName: "Windows 11",
       browserVersion: "latest",
+      platformName: "Windows 11",
       "sauce:options": {
-        geckodriverVersion: "0.34.0",
+        headless: true,
       },
     },
-    sl_edgeW3C: {
-      base: "SauceLabs",
-      browserName: "microsoftedge",
-      browserVersion: "latest",
-      platform: "Windows 11",
-    },
   };
 
   config.set({