diff --git a/dev/bots/prepare_package.dart b/dev/bots/prepare_package.dart
index 1a73b54bfb6c..5878f8e75301 100644
--- a/dev/bots/prepare_package.dart
+++ b/dev/bots/prepare_package.dart
@@ -54,7 +54,9 @@ class PreparePackageException implements Exception {
 
 enum Branch {
   beta,
-  stable;
+  stable,
+  master,
+  main;
 }
 
 /// A helper class for classes that want to run a process, optionally have the