diff --git a/Rakefile b/Rakefile
index f1a80ef51..2f2717331 100755
--- a/Rakefile
+++ b/Rakefile
@@ -157,6 +157,7 @@ namespace :test do
   end
   task parallel: [:accept_license] # given isolated being green, why is this needed?
 
+  desc "Run test files in multiple threads"
   task :isolated do
     require "fileutils"