diff --git a/aconfig/launcher.aconfig b/aconfig/launcher.aconfig
index 8340d37b5a..b7536546ac 100644
--- a/aconfig/launcher.aconfig
+++ b/aconfig/launcher.aconfig
@@ -654,6 +654,13 @@ flag {
   }
 }
 
+flag {
+  name: "enable_taskbar_ui_thread"
+  namespace: "launcher"
+  description: "Enable per-window thread for taskbar"
+  bug: "404636836"
+}
+
 flag {
   name: "enable_expressive_folder_expansion"
   namespace: "launcher"