diff --git a/Library/Homebrew/cli/args.rbi b/Library/Homebrew/cli/args.rbi
index 004dc2fb22..a40455d226 100644
--- a/Library/Homebrew/cli/args.rbi
+++ b/Library/Homebrew/cli/args.rbi
@@ -293,6 +293,9 @@ module Homebrew
 
       sig { returns(T::Boolean) }
       def write_only?; end
+
+      sig { returns(T::Boolean) }
+      def custom_remote?; end
     end
   end
 end