diff --git a/Library/Homebrew/dev-cmd/bump-unversioned-casks.rb b/Library/Homebrew/dev-cmd/bump-unversioned-casks.rb
index 6642014316..293ca7ee7d 100644
--- a/Library/Homebrew/dev-cmd/bump-unversioned-casks.rb
+++ b/Library/Homebrew/dev-cmd/bump-unversioned-casks.rb
@@ -46,7 +46,9 @@ module Homebrew
 
     casks = args.named.to_paths(only: :cask, recurse_tap: true).map { |path| Cask::CaskLoader.load(path) }
 
-    unversioned_casks = casks.select { |cask| cask.url&.unversioned? && !cask.livecheckable? }
+    unversioned_casks = casks.select do |cask|
+      cask.url&.unversioned? && !cask.livecheckable? && !cask.discontinued?
+    end
 
     ohai "Unversioned Casks: #{unversioned_casks.count} (#{state.size} cached)"