diff --git a/Library/Homebrew/sorbet/rbi/parlour.rbi b/Library/Homebrew/sorbet/rbi/parlour.rbi
index ed2a0e5fcd..2ac3023c3b 100644
--- a/Library/Homebrew/sorbet/rbi/parlour.rbi
+++ b/Library/Homebrew/sorbet/rbi/parlour.rbi
@@ -160,5 +160,8 @@ module Cask
 
     sig { returns(T::Boolean) }
     def quarantine?; end
+
+    sig { returns(T::Boolean) }
+    def quiet?; end
   end
 end