diff --git a/Library/Homebrew/cask/cmd/upgrade.rb b/Library/Homebrew/cask/cmd/upgrade.rb
index 2a4b307fb9..e07bc473bd 100644
--- a/Library/Homebrew/cask/cmd/upgrade.rb
+++ b/Library/Homebrew/cask/cmd/upgrade.rb
@@ -72,7 +72,7 @@ module Cask
 
         puts upgradable_casks
           .map { |(old_cask, new_cask)| "#{new_cask.full_name} #{old_cask.version} -> #{new_cask.version}" }
-          .join(", ")
+          .join("\n")
         return if dry_run
 
         upgradable_casks.each do |(old_cask, new_cask)|