diff --git a/Library/Homebrew/autobump_constants.rb b/Library/Homebrew/autobump_constants.rb
index a88ccaa71e..15f6ed8ea5 100644
--- a/Library/Homebrew/autobump_constants.rb
+++ b/Library/Homebrew/autobump_constants.rb
@@ -4,4 +4,5 @@
 # TODO: add more reasons here
 NO_AUTOBUMP_REASONS_LIST = T.let({
   incompatible_version_format: "incompatible version format",
+  bumped_by_upstream:          "bumped by upstream",
 }.freeze, T::Hash[Symbol, String])