diff --git a/Library/Homebrew/cask/lib/hbc/download_strategy.rb b/Library/Homebrew/cask/lib/hbc/download_strategy.rb index 4a601af2b0..137af319a4 100644 --- a/Library/Homebrew/cask/lib/hbc/download_strategy.rb +++ b/Library/Homebrew/cask/lib/hbc/download_strategy.rb @@ -105,7 +105,7 @@ module Hbc else had_incomplete_download = temporary_path.exist? begin - File.open(temporary_path, "w+") do |f| + File.open(temporary_path, "a+") do |f| f.flock(File::LOCK_EX) _fetch f.flock(File::LOCK_UN)