diff --git a/Library/Homebrew/cask/lib/hbc/container/dmg.rb b/Library/Homebrew/cask/lib/hbc/container/dmg.rb
index d53c077cb4..492a9d632c 100644
--- a/Library/Homebrew/cask/lib/hbc/container/dmg.rb
+++ b/Library/Homebrew/cask/lib/hbc/container/dmg.rb
@@ -94,6 +94,7 @@ module Hbc
       DMG_METADATA_FILES = %w[
                              .background
                              .com.apple.timemachine.donotpresent
+                             .com.apple.timemachine.supported
                              .DocumentRevisions-V100
                              .DS_Store
                              .fseventsd