diff --git a/test-mock/api/system-current.txt b/test-mock/api/system-current.txt
index 9e022f0..2b5132e 100644
--- a/test-mock/api/system-current.txt
+++ b/test-mock/api/system-current.txt
@@ -1,4 +1,6 @@
 // Signature format: 2.0
+// - add-additional-overrides=no
+// - migrating=Migration in progress see b/299366704
 package android.test.mock {
 
   public class MockContext extends android.content.Context {