diff --git a/.gn b/.gn
index 0479a7a7f..f005d8253 100644
--- a/.gn
+++ b/.gn
@@ -35,6 +35,10 @@ exec_script_allowlist = build_dotfile_settings.exec_script_allowlist +
 default_args = {
   mac_sdk_min = "10.12"
   ios_deployment_target = "12.0"
+
   # Use Siso instead of Ninja.
   use_siso = true
+
+  # Libyuv must stay on C++20 for longer.
+  use_cxx23 = false
 }