diff --git a/README.md b/README.md
index 34dd169..fb72e95 100644
--- a/README.md
+++ b/README.md
@@ -28,7 +28,7 @@ module.exports = function(config) {
     customLaunchers: {
       Chrome_without_security: {
         base: 'Chrome',
-        flags: ['--disable-web-security']
+        flags: ['--disable-web-security', '--disable-site-isolation-trials']
       }
     }
   })